Science
The L.A. wildfires left neighborhoods choking in ash and toxic air. Residents demand answers
Nearly two weeks after the Eaton fire forced Claire Robinson to flee her Altadena home, she returned, donning a white hazmat suit, a respirator and goggles.
The brick chimneys were among the few recognizable features of the quaint three-bedroom 1940 house neighboring Farnsworth Park. Nearly everything else was reduced to ashes.
The scorching heat melted the glass awards her daughter had received for her theater performances, leaving behind deformed globs of crystal. Where her washer and dryer once stood, Robinson found only a blackened metal frame. The flames even managed to consume her cast-iron bathtub.
“The screws were the only thing that didn’t vaporize,” Robinson said after she scoured through the debris. “Everything else is in the air.
“How do we live in this highly toxic environment and make sure that people aren’t being sent back to their homes prematurely?” she said. “Families are just being told, ‘You’re clear to go in.’ They’re calling us and saying, ‘Is it safe?’ I’m like, ‘I don’t know.’”
Claire Robinson wears a protective suit while inspecting the ruins of her home, which was destroyed in the Eaton fire in Altadena.
(Ryan Ihly)
Tens of thousands of wildfire survivors, including Robinson, have returned to ash-cloaked neighborhoods, even as serious questions about what could be lurking in the debris remain unanswered.
Environmental regulators and public health officials have warned survivors that fire-damaged neighborhoods are probably brimming with toxic chemicals and harmful substances, such as brain-damaging lead and lung-scarring asbestos fibers. Air monitors have measured elevated levels of heavy metals miles downwind of the wildfires.
However, despite the dire warnings from environmental and health officials, fire officials and law enforcement have decided to reopen large swaths of the evacuation zones before disaster personnel could sweep residential communities for some of the most dangerous materials — such as firearm ammunition, propane tanks, pesticides, paint thinner and car batteries.
The EPA’s hazardous waste cleanup was initially projected to last three months. Earlier this week, President Trump signed a federal directive to shorten the cleanup time to 30 days, prompting EPA officials to increase the number of personnel and teams assigned to the hazmat response, and accelerate the process.
Meanwhile, the Army Corps of Engineers’ debris removal was expected to take 18 months. After Trump’s recent visit to L.A., the Army Corps now says it can be done in a year.
“Once a crew shows up to a property, depending on the complexity of that site, it can take two to ten days to clear the debris from that site,” said Col. Eric Swenson of the Corps. “It just really depends on how fast we get those rights of entry.”
As the monumental work of cleaning up the burned zones begins, Robinson and others say they would like to have clearer guidance and support from government agencies to keep people safe from toxic materials.
I think it’s unbelievable that people are being told just to go ahead and go back in.
— Claire Robinson, Altadena resident
Robinson said she thinks it’s alarming that many people have been returning to their destroyed homes without wearing protective gear, and have not been adequately warned about the risks as they begin to clean up their contaminated properties.
“We know that it’s all combusted, and it’s all in the air — metals, plastics. I think it’s unbelievable that people are being told just to go ahead and go back in,” Robinson said. “There’s a lack of coordinated, comprehensive expert response.”
This week, officials from the federal Environmental Protection Agency supervised specialized crews as they began collecting these substances, the first step in what is expected to be a yearlong, multibillion-dollar cleanup and recovery.
As of Wednesday morning, the EPA-led personnel had conducted preliminary surveys of about 2,500 of an estimated 14,500 fire-damaged properties. These crews have been collecting and removing hazardous waste only since Monday. After two days, they had cleared a total of three homes — marking the properties with laminated placards fixed on wooden posts.
A sign indicates EPA contractors have cleared out hazardous materials at a property in Altadena.
(Christina House / Los Angeles Times)
“As places were being [reopened], we had to take a different strategy,” said Harry Allen, an on-scene coordinator for the EPA. “Most fires, we haven’t had [people returning] this early. Because we’re in L.A., it’s really important that people are able to return. … So in this case, as Cal Fire lifted evacuation zones, we said, ‘Let’s get in there, let’s do recon as quickly as we can in advance of repopulation.’”
In California, where electric vehicles and plug-in hybrids make up more than one-quarter of car sales, the U.S. EPA has had to exercise extreme caution around an estimated 1,000 fire-damaged, lithium-ion car batteries — perhaps the most ever damaged by a wildfire. These batteries — also used in e-bikes, scooters and small electronics — have been known to ignite, explode or release toxic gases when exposed to extreme heat or fire.
It’s probably going to be the biggest lithium-ion battery removal activity that’s taken place in this country, if not the world.
— Steve Canalog, deputy incident commander for EPA Region 9
“It’s probably going to be the biggest lithium-ion battery removal activity that’s taken place in this country, if not the world,” said Steve Canalog, deputy incident commander for EPA Region 9, who has overseen cleanups of wildfires, floods, earthquakes and chemical spills.
“Just the high heat can damage the integrity of these battery systems, and they become very unstable and have the risk of spontaneously catching on fire and exploding,” Canalog said. “We have to treat them as unexploded ordnance.”
Because of the risk, EPA personnel transport each battery individually to processing areas. The batteries are often soaked in a saltwater bath to drain the remaining power, and are eventually shredded and taken to recycling facilities.
Hazmat crews typically hear popping and hissing sounds from damaged lithium-ion batteries. In neighborhoods where homes are only a few dozen feet apart, the EPA is telling residents that they should maintain a football-field-length distance from such batteries to avoid injury.
“At the end of the day, you can’t put out a lithium-ion battery fire. It burns so hot and energetically, and you can’t put it out with water or sand or fire blankets. The firefighting strategy is just to let it burn,” Canalog said.
On Wednesday morning, EPA-contracted crews fanned out across a fully razed block in Altadena.
Personnel wore white hazmat suits, blue latex gloves, black sunglasses and respirators as they navigated around a burned-out panel van and blackened metal bed frame. The workers sifted through the ash and debris left in the footprint of a house on Pine Street with shovels and hand tools until they discovered hazardous waste.
An EPA contractor looks for hazardous materials at a home in Altadena.
(Christina House / Los Angeles Times)
One worker carefully held the charred remnants of an iPhone between his index finger and thumb, gently placing it into a black trash bag held by a colleague. Soon after, another approached with his hands full.
“These are all batteries,” he said as he dropped about 20 scorched cylinders into a 5-gallon bucket one by one.
Earlier in the week, another crew extracted a lithium-ion battery from the husk of a Tesla sedan next door. They placed fire-damaged compressed-gas tanks in a row on the front lawn and marked each canister with a white “X,” an indication the fuel had already been burnt.
The EPA has been gathering EV batteries and other hazardous materials found on wrecked properties and moving them to two processing areas: a site near Topanga Beach, where the Santa Monica Mountains meet the Pacific Ocean, for Palisades fire debris; and a site in Lario Park near the foothills of the San Gabriel Mountains in unincorporated Irwindale for Altadena waste. There, EPA crews sort the materials before they’re transported to landfills — exactly where is still unknown.
The decision to stockpile hazardous waste in Lario Park sparked swift backlash from residents and public officials. Four nearby cities — Duarte, Azusa, Irwindale and Baldwin Park — have lodged official complaints arguing that transporting hazardous substances 15 miles outside the Eaton fire and into a popular recreation area poses a risk to thousands more.
“The wildfires that have ravaged Los Angeles County must be cleaned up, but I cannot understand how trucking hazardous waste through so many vulnerable communities, and placing near homes and schools, is the best possible option,” said Michael Cao, mayor of Arcadia, another city near the site.
The EPA has not responded to the complaints, but agency officials said its crews have installed liners to prevent toxic chemicals from leaching into soil. They will also conduct soil testing after their work has concluded.
The EPA’s hazardous waste removal alone is expected to take several months. Once that work is completed, the U.S. Army Corps of Engineers will step up for the second phase: the removal of ash and debris from properties whose owners have signed up for free cleanup, which is expected to take up to 18 months. Property owners can also opt to hire specialized private contractors if they choose to pay the cost themselves.
Although the smoke and ash from any wildfire are considered harmful, urban wildfires are especially dangerous. The smoke and ash from structures and cars can contain more than a hundred toxic chemicals and poisonous gases, according to state officials. Perhaps the most notable is lead, a heavy metal — which has no safe level of exposure for anyone, and which can permanently stunt the development of children when inhaled or ingested.
During the 2018 Camp fire in Paradise, elevated levels of airborne lead lingered for longer than a day. The metal-infused pollution traveled more than 150 miles and was measured as far away as San Jose and Modesto.
On Jan. 7, as the L.A. County wildfires broke out, air samples measured “highly elevated levels” of lead and arsenic over a dozen miles downwind of the Eaton fire, according to the South Coast Air Quality Management District. The highest concentration was recorded in Vernon, about 13 miles southwest.
Wearing protective gear, Eaton fire victim Ian Crick and his friend Matt Listiak search for keepsakes and valuables at his burned-out home in Altadena.
(Allen J. Schaben / Los Angeles Times)
Separately, a Los Angeles-based air quality monitor supported by federal funding showed that hourly measurements of airborne lead spiked on Jan. 8 and 9, when smoke from the Eaton fire cast a pall from Altadena to San Pedro.
As the Eaton fire approached the home of Felipe Carrillo, he urged his wife and two children to evacuate while he stayed behind to protect the home with a garden hose fitted with a high-pressure nozzle. For hours, Carrillo said, he tried to defend their home by preemptively spraying water onto the roof and later extinguishing small fires sparked by the onslaught of wind-driven embers.
By the next day, his was one of the few homes left standing on the block. It wasn’t until a week later that it dawned on Carrillo that he should also be worried about the smoke and toxic chemicals he was exposed to in the overnight firefight — which he waged without any protective gear.
“In that moment, it was fight or die,” Carrillo said.
After things calmed down, he went to see a doctor, who monitored his breathing for any signs of fluid buildup.
“They told me, you know, unfortunately, there’s no way of knowing any effects that may linger from the fact that you fought a fire without a mask or anything,” Carrillo said.
Ahead of the recent rainfall, Carrillo returned to the house to put sandbags around the perimeter of his property to keep ash from drifting onto the property. He’s also temporarily moved his family out of Altadena out of worry that his 14-year-old son and 10-year-old daughter could inhale the same toxic chemicals that he may have already been exposed to. In addition to the recent strong winds that have whipped up dust, Carrillo fears the ensuing cleanup will also kick up contaminants.
Army Corps of Engineers officials said they would spray water and mist on wildfire ash and debris to reduce the risk of airborne contaminants during their cleanup, but Carillo remains concerned.
“What about these dust storms that they’re gonna cause?” Carrillo said. “Let’s say my kids are in the backyard playing football and this big bulldozer kicks up a lot of dust and my kids inhale it?”
Some of the most concerning toxic contamination could be from older buildings. Lead-based paint and asbestos-containing construction materials were commonly used in homes until they were banned in the late 1970s. About 86% of the buildings near the Eaton fire, and 74% near the Palisades fire, were built before 1980, according to Cal Fire.
For Jane Williams, executive director of the nonprofit California Communities Against Toxics, the copious amounts of ash and rubble hearken back to the aftermath of the Sept. 11 attacks on the World Trade Center. In the months that followed, first responders and residents were exposed to a hazardous mix of asbestos, silica dust, heavy metals and other dangerous substances.
As the years passed, many of those affected by the devastation at Ground Zero were diagnosed with long-term health issues such as asthma, diminished lung function and other respiratory problems.
Over the course of January 2025, Williams watched in dread as social media videos and news coverage emerged showing Southern California residents whose homes had been destroyed sifting through the rubble unmasked.
This is the disaster after the disaster.
— Jane Williams, executive director of California Communities Against Toxics
“It’s exactly what happened with the Twin Towers,” Williams said. “This is the disaster after the disaster. Tens of thousands of people will go back to their properties, and most of them will not wear masks.”
At this point, little is known about the contaminants lingering in the wildfire ash in Altadena and Pacific Palisades. The August 2023 fire in Maui similarly incinerated residential communities composed largely of older housing. After that wildfire was quelled, experts found that ash contained a myriad of heavy metals, including lead, arsenic, copper and cobalt.
The L.A. fires have also led to concerns about water contamination. Water districts in Altadena and the Pacific Palisades/Malibu area have issued “do not drink” advisories for some areas. Suppliers that manage these water systems are assessing impacts of the fires, making repairs and testing for contamination.
According to the State Water Resources Control Board, these advisories “were issued as a precautionary measure until the condition of the system could be determined.” That said, the board’s website also notes that while building materials can contain chemicals that may contaminate water runoff from burned areas, this generally does not affect drinking water supplies, which are protected from exposure as long as infrastructure wasn’t directly damaged.
Completing the extensive cleanup efforts in the burned areas of L.A. will probably take years. In the meantime, residents — not just in the neighborhoods that burned but those nearby too — wonder how to protect themselves.
For example, Garo Manjikian evacuated from his Pasadena home with his wife and three children as the Eaton fire exploded. The family returned to find their house and garden covered in a layer of ash.
They spent days cleaning the house; washing their clothes, bedding and rugs; and throwing away pillows that had absorbed smoke. Manjikian said he hosed ash off the roof and out of the gutters, and power-washed the outside walls. Inside, he used the power washer and a shop vac to clean out ash that had collected in the windowsills.
I decided to just do everything I can myself to remove the ash.
— Garo Manjikian, Pasadena resident
“I decided to just do everything I can myself to remove the ash,” said Manjikian, who rented three industrial air purifiers and ran them in the house for about a week. “I still don’t for sure know how toxic it still might be in the house, but at this point, there is no more smell of smoke.”
But fine ash continued to float down, coating the house and the yard. Manjikian and his wife have been urging their three sons, the oldest aged 8 and the twins aged 5, not to play outside. And when they do have to leave the house, the boys are getting used to wearing masks again, like they did during the pandemic.
An EPA contractor looks for hazardous materials at a home in Altadena.
(Christina House / Los Angeles Times)
Manjikian has heard that some homeowners, schools and businesses have been paying for lab tests out of their own pockets to determine what types of contaminants need to be cleaned up. He said it would be helpful if the results of those tests could be made available for him and others who might have been exposed to hazardous waste.
“If they do the testing and find out there’s toxic material there, that would be good information for the neighboring houses to have, whether it came back positive on the toxic particles or negative,” Manjikian said.
For Robinson, the Altadena resident whose home was destroyed in the Eaton fire, the disaster has brought multiple layers of grief and unanswered questions.
Robinson is the founder of Amigos de los Rios, a nonprofit group, and already knew the importance of wearing protective gear to guard against hazardous materials during river cleanups and park construction projects.
When she returned to inspect the ruins of her home, as well as the group’s nearby office, which also was destroyed, she and her husband spent about $250 at a hardware store buying two disposable coverall suits, nitrile gloves and leather gloves to go over them, plus multiple packages of goggles, booties and N100 masks.
Robinson said she thinks L.A. County officials should be doing much more to help residents understand the risks and to protect themselves. Residents shouldn’t be left in the dark, she said, about how much danger they might encounter as they sift through the ashes.
“I would expect there to be a much more concerted, organized, comprehensive effort to share information,” she said, and also to provide protective gear for those who can’t afford to buy it.
Robinson is also concerned about the health effects. Recently, she has had difficulty breathing unlike anything she remembers. At times, she feels tightness in her chest, and experiences a fit of coughing and wheezing.
She said it’s crucial that as others return to inspect their devastated neighborhood, they take measures to protect themselves.
“I’m less concerned about looting,” Robinson said, “than I am about people being exposed to these things and facing short, medium and long-term health impacts.”
Times staff writer David Zahniser contributed to this report.
Science
On a $1 houseboat, one of the Palisades fire’s ‘great underdogs’ fights to stay afloat
Rashi Kaslow sat on the deck of a boat he bought from a friend for just $1 before the fire. After the blaze destroyed his uninsured home in the Palisades Bowl mobile home park — which the owners, to this day, still have not cleared of fire debris — the boat docked in Marina del Rey became his home.
“You either rise from the ashes or you get consumed by them,” he said between tokes from a joint as he watched the sunset with his chihuahua tucked into his tan Patagonia jacket.
“Some people take their own lives,“ he said, musing on the ripple effect of disasters. “After Katrina, a friend of my mom unfortunately did that. … Some people just fall into the bottle.”
The flames burn not only your house, but also your most sacred memories. Among the few items Kaslow managed to save were journals belonging to his late mother, who, in the 1970s, helped start the annual New Orleans Jazz Fest, which is still going strong today.
A disaster like the Palisades fire burns your entire way of life, your community, your sense of self.
The fire put a strain too big to bear on Kaslow’s relationship with his long-term girlfriend. The emotional trauma he experienced forced him to take a break from boat rigging, a dangerous profession he’s practiced for 10 years that requires sharp mental focus as you scale ship masts to wrangle a web of ropes, wires and blocks.
Some days, he feels kind of all right. Others, it’s like he’s drowning in grief. “You try to get back on that horse and do this recovery thing — the recovery dance,” Kaslow said, “which is boring, to say the least.”
Living on a houseboat comes with its own rituals; these largely keep Kaslow occupied. He goes to the boathouse for his ablutions, walks his chihuahua around the marina and rides an electric skateboard into the nearby neighborhoods for a change of scenery.
‘You either rise from the ashes or you get consumed by them.’
— Rashi Kaslow
He’s not yet sure where he’ll end up. Maybe someday the owners of the Palisades Bowl will let him rebuild, but Kaslow is too much of a pragmatist to get his hopes up. Maybe he’ll eventually scrape together enough money to leave the city he’s called home for more than two decades and finally buy a regular old house — not a mobile home, not a boat.
As 2025 slogged on, Kaslow repeatedly watched leaders do little to help. The Los Angeles Fire Department had failed to put out the Lachman fire. Gov. Gavin Newsom’s state park had failed to monitor the burn scar for hotspots. The Los Angeles Department Water and Power had failed to fill the Santa Ynez Reservoir, meant to protect the Pacific Palisades. Police failed to protect his burned lot from looters. Mayor Karen Bass failed to force the owners of the Palisades Bowl to clear the lot of debris.
Kaslow imagines welcoming Bass and Newsom onto his boat — his life now — and sailing out into the sunset. “There should be some accountability,” he said. “I just want to look them in the eyes and ask them, ‘What the f— really happened?’”
Kaslow holds a ceramic vase he recovered from the rubble of his home.
It’s a sentiment shared by many from the Bowl, who Kaslow has dubbed the fire’s “great underdogs.” They’re among the Palisadians who’ve been essentially barred from recovering — be it due to financial constraints, uncooperative landowners or health conditions that make the lingering contamination, with little help from insurance companies to remediate, simply too big a risk.
“I don’t want to be a victim for the rest of my life,” Kaslow said. “I don’t want to let this destroy me anymore than it already has.”
As November’s beaver supermoon rose above the marina, pulling the tide up with it, he felt a glimmer of optimism — a foreign feeling, like reconnecting with an old friend.
Kaslow had received a bit of money from one of the various resident lawsuits against the Palisades Bowl’s owners, as well as a modest housing grant from Neighborhood Housing Services, a local nonprofit, that covered the rent for his spot in the marina.
But a week later, Neighborhood Housing Services ran out of money, and a federal loan that could finally help him to move on from simply trying to stay afloat to charting his future remains far off on the horizon.
Regardless, Kaslow cannot help but feel grateful, despite all he’s lost. He thinks of his elderly neighbors whose entire lives were upended in their final years. Or the kids of nearby Pali High, who pushed their way through the COVID-19 pandemic only to have their school burn in the blaze.
He thinks of the countless people quietly going through their own personal tragedies, without the media attention or outpouring from the greater community or support from the government: A messy divorce that leaves a young mother isolated; a kitchen fire in suburban America that levels a home; an interstate car crash that kills someone’s child.
“You start to appreciate things more, I think, when your whole life is shaken up,” Kaslow said, looking out at the moonlight glimmering across the marina. “That is a blessing.”
Science
A retired teacher found some seahorses off Long Beach. Then he built a secret world for them
Rog Hanson emerges from the coastal waters, pulls a diving regulator out of his mouth and pushes a scuba mask down around his neck.
“Did you see her?” he says. “Did you see Bathsheba?”
On this quiet Wednesday morning, a paddle boarder glides silently through the surf off Long Beach. Two stick-legged whimbrels plunge their long curved beaks into the sand, hunting for crabs.
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But Hanson, 68, is enchanted by what lies hidden beneath the water. Today he took a visitor on a tour of the secret world he built from palm fronds and pine branches at the bottom of the bay: his very own seahorse city.
The visitor confirms that she did see Bathsheba, an 11-inch-long orange Pacific seahorse, and a grin spreads across Hanson’s broad face.
“Isn’t she beautiful?” he says. “She’s our supermodel.”
If you get Hanson talking about his seahorses, he’ll tell you exactly how many times he’s seen them (997), who is dating whom, and describe their personalities with intimate familiarity. Bathsheba is stoic, Daphne a runner. Deep Blue is chill.
He will also tell you that getting to know these strange, almost mythical beings has profoundly affected his life.
“I swear, it has made me a better human being,” he says. “On land I’m very C-minus, but underwater, I’m Mensa.”
Hanson is a retired schoolteacher, not a scientist, but experts say he probably has spent more time with Pacific seahorses, also known as Hippocampus ingens, than anyone on Earth.
“To my knowledge, he is the only person tracking ingens directly,” says Amanda Vincent, a professor at the University of British Columbia and director of the marine conservation group Project Seahorse. “Many people love seahorses, but Roger’s absorption with them is definitely distinctive. There’s a degree of warm obsession there, perhaps.”
Rog Hanson keeps watch over a small colony of Pacific seahorses.
(Carolyn Cole / Los Angeles Times)
Over the last three years, Hanson has made the two-hour trek from his home in Moreno Valley to the industrial shoreline of Long Beach to visit his “kids” about every five days. To avoid traffic, he often leaves at 2 a.m. and then sleeps in his car when he arrives.
He keeps three tanks of air and his scuba gear in the trunk of his 2009 Kia Rio. A toothbrush and a pair of pink leopard print reading glasses rest on the dash.
Hanson makes careful notes after all his dives in a colorful handmade log book he stores in a three-ring binder. On this Wednesday he dutifully records the water temperature (62 degrees), the length of the dive (58 minutes), the greatest depth (15 feet) and visibility (3 feet), as well as the precise location of each seahorse. His notes also include phase of the moon, the tidal currents and the strength of the UV rays.
“Scientists will tell you that sunlight is an important statistic to keep down,” he says.
He has given each of his four seahorses a unique logo that he draws with markers in his log book. Bathsheba’s is a purple star outlined in red, Daphne’s is a brown striped star in a yellow circle.
Rog Hanson makes careful notes after all his dives. He has given each of his four seahorses a unique logo.
(Carolyn Cole / Los Angeles Times)
He’s learned that the seahorses don’t like it when he hovers nearby for too long. Now he limits his interactions with them to 15 to 30 seconds at a time.
“At first I bugged them too much,” he says. “I was the paparazzi swimming around.”
Hanson traces the origins of his seahorse story back nearly two decades to the early morning of Dec. 30, 2000.
He was diving solo off Shaw’s Cove in Laguna Beach when a slow-moving giant emerged from the abyss. It was a gray whale whose 40-foot frame cast Hanson in shadow.
The whale could have killed him with a flick of its tail, Hanson says, but he felt no fear. The two made eye contact and, as Hanson tells it, he felt the whale’s gaze peering directly into his soul.
It was all over in 10 seconds, but Hanson was altered. He had always wanted to live at the beach, but after this encounter, he vowed to make it happen. It took years —15, in fact — but he finally got a job as a special education teacher in the Long Beach public school system. He bought a van and parked it on Ocean Boulevard. He lived at the beach and dived every day for 3½ months before moving to Moreno Valley.
To amuse himself while he lived at the beach, he built an underwater city he called Littleville out of discarded toys he found at the bottom of the bay.
Hanson saw his first seahorse in January 2016 while checking on Littleville. It was bright orange, just 4.5 inches long, and Hanson, who had logged over a thousand dives in the area, knew it didn’t belong there.
Daphne is one of the seahorses that Rog Hanson is studying in Alamitos Bay.
(Carolyn Cole / Los Angeles Times)
The range of the Pacific seahorse is generally thought to extend from Peru to as far north as San Diego. This seahorse ended up about 100 miles north of that.
Scientists said the seahorse and others that joined her had probably ridden an unusual pulse of warm water up the coast, along with other animals generally found in southern waters.
“We were getting a lot of weird sightings in the fall of 2015,” says Sandy Trautwein, vice president of husbandry at the Aquarium of the Pacific. “There was a yellow-bellied sea snake, bluefin tuna, marlin, whale sharks — a lot of animals associated with warm water.”
Most of these animals eventually left after ocean temperatures returned to normal, but Hanson’s seahorses stayed.
That may be because Hanson had built them a home.
It happened like this: In June 2016 he watched in horror as more than 100 high school football players splashed in the shallow waters, right where his seahorses usually hung out.
“I thought, I gotta do something, I gotta do something,” he says.
“On land I’m very C-minus, but underwater, I’m Mensa.”
— Rog Hanson
Then he remembered that, back in the Midwest where he grew up, he used to help the city park service make “fish cribs.” In early spring they would use brush and twigs to build what looked like a miniature log cabin with no roof on an ice-covered lake. When the ice melted, the cribs would fall to the bottom, creating a habitat for fish and other animals.
“So I said to myself, build them a city that’s deeper, where feet can’t get to it even at low tide,” Hanson says.
And he did.
By July 2016 two pairs of seahorses had moved into the new habitat. Daphne, the runner, was named after the nymph from Greek mythology who flees Apollo, Kenny’s name came from the proprietor of a local kayaking company. “Bathsheba” was inspired by a Bible story, and her mate, Deep Blue, named after a dive shop that has helped sponsor Hanson’s work since he launched his seahorse study.
He’s seen Kenny’s and Deep Blue’s bellies swell with pregnancy and noted how their partners check in on them daily, frequently standing sentinel nearby. He’s visited the fish at odd hours to see how their behavior changes from morning to night. And he mourned when Kenny disappeared in January. He still hasn’t come back. (A new member, CD Street, arrived June 29.)
“It feels like I’m reading a book, the book of their life, and I can’t put it down,” he says.
He’s also reached out to seahorse scientists across the globe to compare notes. “I won’t say I know the most about seahorses in the world, but I know the people who do,” he says.
Amanda Vincent, the director of Project Seahorse, says that seahorses spark an emotional reaction in almost everyone.
Daphne is one of the seahorses that Rog Hanson is studying in Alamitos Bay. Hanson and Ashley Arnold keep watch over a small colony of Pacific seahorses.
(Carolyn Cole / Los Angeles Times)
“Remember those books with three flaps where you can mix the head of a giraffe with the body of a snake and the tail of a monkey? That’s what we’ve got here,” she says. “They appeal to the sense of fancy and wonder in us.”
When Mark Showalter, a planetary astronomer at the SETI Institute, recently discovered a moon orbiting Neptune, he named it Hippocamp in part because of his love of seahorses.
“I’ve seen them in the wild and they are marvelously strange and interesting,” he says. “It’s a fish, but it doesn’t look anything like a fish.”
Pacific seahorses are among the largest members of the seahorse family. Males can grow up to 14 inches long, while females generally top out at about 11. They come in a variety of colors, including orange, maroon, brown and yellow. They are talented camouflagers that can alter the color of their exoskeleton to blend into their environment.
“I won’t say I know the most about seahorses in the world, but I know the people who do.”
But perhaps their most distinguishing characteristic is that they are the only known species in the animal kingdom to exhibit a true male pregnancy. Females deposit up to 1,500 eggs in the male’s pouch. The males incubate the eggs, providing nutrition and oxygen for the growing embryos. When the larval seahorses are ready to be released, he goes into labor — scientists call it “jackknifing” — pushing his trunk toward his tail.
After three years of observation, Hanson has collected new evidence about seahorse mating practices. His research suggests that although most seahorses are monogamous, a female will mate with two males if there are no other female seahorses around.
He also found that males, who are in an almost constant state of pregnancy, tend to stick to an area about the size of a king-size mattress, while the females roam up to 150 feet from their home during a typical day.
Eventually, he may be able to help scientists answer another long-standing question: What is the lifespan of Pacific seahorses in the wild? Some researchers say about five years; others think it could be up to 12.
“It will be interesting to see what Roger finds out,” Vincent says.
In June 2017, about one year after Hanson began formally tracking the seahorses, he took on a partner: a young scuba instructor named Ashley Arnold.
Arnold, who has short red hair and a jocular vibe, is a former Army staff sergeant who served in Iraq and Afghanistan. She learned to dive as part of a program the Salt Lake City Veterans Affairs hospital offered to female veterans suffering from post-traumatic stress disorder and military sexual trauma. Arnold suffered from both. Diving became her salvation.
Dive instructor Ashley Arnold is a former Army staff sergeant who says that diving at least twice a week helps her deal with PTSD and MST.
(Carolyn Cole / Los Angeles Times)
“All the irritation on the surface disappears when you go under the water,” she says. “It’s like, ‘What was I concerned about?’ You forget about everything else. Nothing else matters.”
She used her GI Bill to pay for a scuba instructor course and to set up her own business. Now, she finds that if she dives at least twice a week and has a dog, she does not need to take medication.
“All the irritation on the surface disappears when you go under the water.”
— Ashley Arnold
“That’s a pretty big statement in my opinion,” she says.
Arnold and Hanson met in June 2016 on a dive trip to Catalina. Hanson mentioned his seahorses. Arnold was intrigued, but still lived in Salt Lake City.
One year later, Arnold moved to Huntington Beach and gave Hanson a call.
“I said, ‘Hey Roger, let’s chat. Any chance I could join you at the seahorses you talked about?’” she says. “And he decided I was acceptable.”
Now, Arnold and her boyfriend, Jake Fitzgerald, check in on the seahorses about once a week and help Roger rebuild the city he created for them.
Rog Hanson, 68, teamed up with dive instructor Ashley Arnold two years ago to keep watch over a small colony of Pacific seahorses.
(Carolyn Cole / Los Angeles Times)
“We call them our kids because we love them so much,” Arnold says.
Hanson and Arnold are very protective of their seahorse family. They tell visitors to remove GPS tags from their photos. They swear them to secrecy.
There is little chance anyone would find Hanson’s seahorses without a guide. Also, diving in these waters off Long Beach can be a challenge.
The water is shallow. It’s hard to get your buoyancy right. A misplaced flipper kick can stir up blinding sand and silt.
But if Hanson wants to show you his underwater world, nothing will stop him. He will hold you firmly by the hand and guide you down to the forest he built at the bottom of the bay.
Ashley Arnold, right, gets rinsed off with a hose by Rog Hanson after a dive Alamitos Bay.
(Carolyn Cole / Los Angeles Times)
He will use a plastic tent stake, jabbing it into the bottom to propel himself — and you holding on — across the ocean floor. When he spots a seahorse he will use the stake as a pointer. Through the murky water you strain to see. Then it appears.
Orange and rigid. Thin snout. Bony plates. Stripes down the torso. Totally still.
And if you’ve never seen a seahorse in the wild before, you will feel honored and awed, as if you’ve just seen a unicorn beneath the sea.
Science
California’s summer COVID wave shows signs of waning. What are the numbers in your community?
There are some encouraging signs that California’s summer COVID wave might be leveling off.
That’s not to say the seasonal spike is in the rearview mirror just yet, however. Coronavirus levels in California’s wastewater remain “very high,” according to the U.S. Centers for Disease Control and Prevention, as they are in much of the country.
But while some COVID indicators are rising in the Golden State, others are starting to fall — a hint that the summer wave may soon start to decline.
Statewide, the rate at which coronavirus lab tests are coming back positive was 11.72% for the week that ended Sept. 6, the highest so far this season, and up from 10.8% the prior week. Still, viral levels in wastewater are significantly lower than during last summer’s peak.
The latest COVID hospital admission rate was 3.9 hospitalizations for every 100,000 residents. That’s a slight decline from 4.14 the prior week. Overall, COVID hospitalizations remain low statewide, particularly compared with earlier surges.
The number of newly admitted COVID hospital patients has declined slightly in Los Angeles County and Santa Clara County, but ticked up slightly up in Orange County. In San Francisco, some doctors believe the summer COVID wave is cresting.
“There are a few more people in the hospitals, but I think it’s less than last summer,” said Dr. Peter Chin-Hong, a UC San Francisco infectious diseases expert. “I feel like we are at a plateau.”
Those who are being hospitalized tend to be older people who didn’t get immunized against COVID within the last year, Chin-Hong said, and some have a secondary infection known as superimposed bacterial pneumonia.
Los Angeles County
In L.A. County, there are hints that COVID activity is either peaking or starting to decline. Viral levels in local wastewater are still rising, but the test positivity rate is declining.
For the week that ended Sept. 6, 12.2% of wastewater samples tested for COVID in the county were positive, down from 15.9% the prior week.
“Many indicators of COVID-19 activity in L.A. County declined in this week’s data,” the L.A. County Department of Public Health told The Times on Friday. “While it’s too early to know if we have passed the summer peak of COVID-19 activity this season, this suggests community transmission is slowing.”
Orange County
In Orange County, “we appear to be in the middle of a wave right now,” said Dr. Christopher Zimmerman, deputy medical director of the county’s Communicable Disease Control Division.
The test positivity rate has plateaued in recent weeks — it was 15.3% for the week that ended Sept. 6, up from 12.9% the prior week, but down from 17.9% the week before that.
COVID is still prompting people to seek urgent medical care, however. Countywide, 2.9% of emergency room visits were for COVID-like illness for the week that ended Sept. 6, the highest level this year, and up from 2.6% for the week that ended Aug. 30.
San Diego County
For the week that ended Sept. 6, 14.1% of coronavirus lab tests in San Diego County were positive for infection. That’s down from 15.5% the prior week, and 16.1% for the week that ended Aug. 23.
Ventura County
COVID is also still sending people to the emergency room in Ventura County. Countywide, 1.73% of ER patients for the week that ended Sept. 12 were there to seek treatment for COVID, up from 1.46% the prior week.
San Francisco
In San Francisco, the test positivity rate was 7.5% for the week that ended Sept. 7, down from 8.4% for the week that ended Aug. 31.
“COVID-19 activity in San Francisco remains elevated, but not as high as the previous summer’s peaks,” the local Department of Public Health said.
Silicon Valley
In Santa Clara County, the coronavirus remains at a “high” level in the sewershed of San José and Palo Alto.
Roughly 1.3% of ER visits for the week that ended Sunday were attributed to COVID in Santa Clara County, down from the prior week’s figure of 2%.
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