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Why did four whales wash up in San Francisco Bay in a week and a half?

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Why did four whales wash up in San Francisco Bay in a week and a half?


Credit: Unsplash/CC0 Public Domain

The juvenile minke whale had been spotted swimming around San Francisco Bay for nearly a week by the time she beached herself off the coast of Emeryville on April 8. Scientists had thought she seemed healthy, but after an examination, they determined she was acting abnormally and had to be euthanized due to illness.

It was the fourth whale death in the San Francisco Bay in a week and a half. The other three were gray whales, the first of which—a 36-foot-long female—washed up at Black Sands Beach in the Marin Headlands on March 30. Its cause of death remains unknown.

On April 2, a deceased adult male gray whale was found floating east of Angel Island; its cause of death is also not known, according to the Marine Mammal Center. Then, a subadult male gray whale washed ashore at Fort Point Rock Beach near the Golden Gate Bridge in San Francisco on April 4, and scientists determined that it likely died due to a vessel strike, according to the mammal center.

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Taken together, the deaths have raised the specter of past “unusual mortality events” that caused whales to die in higher-than-normal numbers.

“This is unusual,” said Kathi George, director of Cetacean Conservation Biology at the Marine Mammal Center in Sausalito. “It takes me back to several years ago when we did have a large number of strandings happen at the same time.”

While the unusually high number of whales beaching in such a short span is abnormal, the number of whales who have died around the bay for the year has remained in line with typical levels, scientists say.

“This is the normal time of year when gray whales are doing their northward migration from Mexico up to Alaska, so it’s not uncommon for us to have gray whales in and around San Francisco Bay in April and May each year,” said Moe Flannery, who leads the marine mammal necropsy team at the California Academy of Sciences.

“Although they seem high because they’re concentrated into a short period of time, the numbers of dead and stranded are not any different than the recent previous years.”

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Whales can die for “a number of reasons”—from diseases to malnutrition to vessel strikes, George said.

“It’s coincidental that everything happened in a week and a half, but there are a lot of whales out there right now, and some of their physical condition that they’re in when they arrive in the bay may make them more susceptible to human impacts if they’re not as healthy,” she said.

Scientists began observing whales entering the San Francisco Bay around 2016 as they completed their annual migration between Mexico and the sub-Arctic, George said. The whales do not feed while they are in their breeding grounds in Mexico, and expend a lot of energy mating, nursing babies and giving birth before facing a long journey back north to their feeding grounds, she added.

Because of this energy expenditure, scientists have seen the gray whales attempt to feed in new locations—including San Francisco Bay, George said. Their increased appearance in the bay could also potentially be explained as whales seeking a place to rest before continuing the migration, or a reaction to climate change, warming ocean temperatures and prey availability.

The Marine Mammal Center has tracked at least 18 individual whales swimming in the bay this year, and sightings of gray whales have been reported almost every day since mid-March, George said. The majority of the whale sightings have been reported east of Angel Island, said Giancarlo Rulli, the associate director of public relations for the Marine Mammal Center.

Between 2019 and 2023, gray whales were dying in much higher numbers due to an unusual mortality event, which was declared by the National Oceanic and Atmospheric Administration Fisheries. Gray whales lost more than 40% of their population in four years, Rulli said. During this time, there were 347 gray whale strandings in the United States, according to NOAA.

“These whales basically left the Arctic with a half tank,” Rulli said. “The food sources that they were normally accustomed to eating that were highly nutritious for this massive, 10,000–12,000-mile journey, had moved farther away due to climate change, and as a result, these whales were left to forage on food matter that was much less nutritious.”

Between January and April 2019, which was the first year of the unusual mortality event, 34 dead gray whales washed up on California’s coast, Flannery said. Seven have so far this year.

George said that whether the recent deaths could be the start of an unusual mortality event is “still under discussion and review,” adding that the data collected from these strandings will help scientists understand “the bigger picture of what’s happening.”

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“We’re not there yet,” she said, adding that scientists have to look at their migratory range holistically.

Whales will continue to appear in the bay through mid-May as they continue their migration north, George said.

Flannery added that anyone using the water “needs to be more aware of the animals that are sharing that environment.”

2025 MediaNews Group, Inc. Distributed by Tribune Content Agency, LLC.

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San Francisco, CA

What’s Worth More Than Cash in San Francisco Real Estate? Anthropic Stock

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What’s Worth More Than Cash in San Francisco Real Estate? Anthropic Stock


Few things are more valuable in the Bay Area than real estate. In San Francisco, the median house price is now over $2 million. Last month, at least seven houses in the city sold for $1 million over the asking price, and buyers regularly offer to pay in cash or waive contingencies to stay competitive. Yet there is one thing that remains even more valuable than a house, and possibly more valuable than money itself: stock in Anthropic or OpenAI.

Last week, 160 Noe Street, an Edwardian home in San Francisco’s desirable Duboce Triangle neighborhood, was listed for sale at $2.9 million—or the equivalent amount in Anthropic or OpenAI shares, as based on those companies’ current valuations. Rachel Swann, the listing agent, says she was inspired to set these unusual terms after meeting several Anthropic employees at an open house for a different property. “These people have a lot of paper wealth, but they don’t always have the liquidity to do things they want,” Swann says. Some of these employees were expecting to come into as much as $50 million from their Anthropic shares, and wondered if they could use that as leverage to buy a house, according to Swann. “This kept coming up over and over again.”

Swann’s listing is unconventional, but not singular. In April, an investment banker named Storm Duncan offered to exchange his Mill Valley home and an adjacent parcel of land for Anthropic shares. And in May, Vijay Chattha, who owns an agency that does PR for tech companies, listed his Healdsburg home for $2.5 million, or $2 million in Anthropic stock. “I want to sell my house, and I want to invest in Anthropic,” Chattha says. “Why not combine the two?

Chattha’s house—a three bed, three bath with a pool and a bocce court in a part of Sonoma County that abuts some of the region’s most famous wineries—also comes with coveted short-term rental status, allowing the owner to list it on platforms like Airbnb. Only a handful of properties in Healdsburg come with that status, and only about a dozen come up for sale in a given year.

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Chattha is offering a $500,000 discount to Anthropic employees because he believes the value of Anthropic shares will grow faster than any other investment, and his vacation home in wine country is the best bargaining chip he has to try to access them. “If you look at Anthropic’s growth last year, it’s insane,” he says, noting the $380 billion valuation the company claimed in February. “Now they’re raising at $965 billion. That’s three X in like three months.” He added that he was open to exchanging the house for shares in Anthropic, but not OpenAI, because he prefers using Anthropic’s products.

The real estate listings come at a time when investors are salivating at the record-high valuations of Anthropic and OpenAI, and even those considered wealthy by Bay Area standards are feeling FOMO about the affluence that could come from these companies’ debuts on the stock market. (On Monday, Anthropic submitted paperwork for its initial public offering; OpenAI is also reportedly preparing to file in the coming months.) Despite the unprecedented valuations of these companies, many people believe their stock prices will only go up, and that anyone who gets a piece now could win the jackpot.

People are clamoring to buy equity in OpenAI and Anthropic on the secondary market, leading to a frenzy of transactions that may or may not be legitimate. As a result, Anthropic updated its policy around “unauthorized Anthropic stock sales” this spring, which notes that “if someone purports to sell Anthropic shares without proper board approval, that transaction is invalid.” A spokesperson for Anthropic pointed back to this policy when asked about the possibility of exchanging company shares for real estate.



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Live Updates: San Francisco Primary Election 2026

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Live Updates: San Francisco Primary Election 2026


Welcome to our running tally of Election Night results. Or, as this is California, well beyond tonight, as results continue to trickle in.

The first batch of results should arrive at 8:45 p.m., with three more to follow tonight. The Department of Elections has the breakdown.

San Francisco is voting in three special elections, for District 2 and District 4 supervisors and for a Board of Education member. Both supervisor races are referendums on housing, especially District 2, while the main backdrop of the D4 race is all the hot feelings around the fate of the Sunset Dunes Park (nee Great Highway).

The winners of all three special races will have to compete again in November for their seats.

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Keeping it local, SF is also voting on four ballot measures. Prop A is for a bond to pay for an emergency water-system. B is for term limits. C and D are dueling measures related to the “overpaid CEO” tax. (Links go to our reporting on each race or issue; or click here for our Election 2026 page.)

Vote local, think national: Which two candidates will advance to the November election to replace Nancy Pelosi?

Statewide races include the primaries for governor, education superintendent, lieutenant governor, and much more.

Polls close soon. If you haven’t voted yet, find your polling station here.

Tuesday, June 2, 5:40 p.m.

Two and a half hours until our polls close. Before we go down the local rabbit hole, a reminder that other states have primary action today: New Jersey, Iowa, New Mexico, South Dakota, and Montana.

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Why does it take so long to get results in California? CalMatters has you covered on that story. We shouldn’t expect a call tonight on the governor’s race.

The last big election was November 5, 2024. (Remember?) Ten days later, there were still races to call in San Francisco.


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So if you’re waiting for the pundits (and maybe even us) to tell you What It All Means, you might have to wait a while.



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San Francisco voters to decide on dueling measures on Top Executive Pay Tax changes

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San Francisco voters to decide on dueling measures on Top Executive Pay Tax changes


San Francisco voters weighed in Tuesday on two competing measures that seek to change the Top Executive Pay Tax, with one of the measures also including a change to the Gross Receipts Tax.

Should both measures pass, the one with the most votes will take effect, according to the propositions’ legal text.

Currently, the measures state that most businesses with San Francisco gross receipts up to $5 million are exempt from the Gross Receipts Tax. And businesses that use more than half of their city payroll for in-house administrative and management services pay an Administrative Office Tax instead of a Gross Receipts Tax.

The Top Executive Pay Tax is a tax some large businesses pay if their highest-paid managerial employee earns more than 100 times the median pay of their San Francisco employees. Businesses that have city gross receipts up to $5 million and are not subject to the Administrative Office Tax are exempt.

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Proposition C

Proposition C states it would increase the number of businesses that could be exempt from the Gross Receipts Tax and would stop any further increases to the “Top Executive Pay Tax” after a final rate bump.

The proposed measure says it would raise the Gross Receipts Tax exemption ceiling to $7.5 million. The $7.5 million ceiling would also apply to the Top Executive Pay Tax exemption.

As for changes to the Top Executive Pay Tax, Proposition C states it would implement the 2028 tax rate increase in 2027, but then stop any future increases.

Supporting Proposition C are Rodney Fong, CEO of the San Francisco Chamber of Commerce, and Chris Wright, senior vice president of Advance SF, an organization of companies, which includes Bank of America, OpenAI, Waymo, the SF Giants CEO and others.

Fong and Wright, in their argument for the measure, say giving businesses more tax breaks would help keep more employees on payroll and would give companies the ability to “contribute to city services in a predictable and balanced way.”

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Critics of Proposition C, such as the San Francisco Tenants Union, slam the measure as “billionaire-backed” and argue it would kill the Top Executive Pay Tax and would hand out more tax breaks to businesses at a time when the city is in a budget deficit and faces cuts to essential services.

Proposition D

Proposition D also seeks to change the Top Executive Pay Tax, which is collected from some large businesses where the highest-paid managerial employee earns more than 100 times the median compensation paid to other employees.

If approved, the measure would change the calculation of the tax using the compensation of all employees, not just employees based in San Francisco. Top Executive Pay Tax rates would also be increased for San Francisco gross receipts and payroll.

Supporters have billed the measure as a way to counteract federal cuts to Medicaid. A report by the City Controller’s Office said the measure could result in $250 million to $300 million in additional revenue.

“Proposition D is the solution to our budget deficit. It asks large corporations — not small businesses, not working families — to contribute a little more,” supporters said in the city’s official voter guide.

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The measure has the backing of most of the Board of Supervisors, along with labor unions and Rep. Nancy Pelosi.

Opponents, including Mayor Daniel Lurie and state Sen. Scott Wiener, have argued Proposition D would negatively impact the city’s recovery following the COVID-19 pandemic. 

“San Francisco is already one of the most expensive cities in the country to live and do business. Adding extreme and unpredictable tax increases risks driving employers away just as we are trying to bring jobs, workers, and foot traffic back downtown,” said Supervisor Matt Dorsey in the city’s voter guide.



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