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First documented tiger shark mating hub identified by UH researchers

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First documented tiger shark mating hub identified by UH researchers


OLOWALU (HawaiiNewsNow) – A team of shark researchers from the University of Hawaii at Manoa have solved a longstanding mystery.

Biologists from the the Hawaii Institute of Marine Biology Shark Lab have identified the first-ever documented tiger shark mating hub.

Six years of acoustic tracking data led the team to pinpoint the area at Olowalu, Maui, leading them to new discoveries about the nature and timing of tiger shark mating and its correlation to Maui’s whale calving season.

This new finding challenges the understanding of tiger sharks as purely solitary animals.

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“To our knowledge, no group mating site for tiger sharks has ever been identified. This paper adds an important piece to the puzzle of tiger shark reproduction,” said Carl Meyer, co-author of the study and principal investigator of the HIMB Shark Lab.

Researchers were able to show evidence that tiger sharks have a predictable seasonal gathering of mature males and females that coincides with humpback whale calving season in Hawaii.

Until this discovery, it was unclear how or if tiger sharks came together to reproduce or if mating was just a result of random encounters.

“Tiger sharks typically roam widely in what can seem like random patterns, so finding such a strong and consistent seasonal trend in their movements around Maui was unexpected,” said Paige Wernli, lead author of the study and a graduate student in the HIMB Shark Lab.

The years-long tracking data showed a predictable seasonal presence of both mature male and female tiger sharks at Olowalu, as well as physical evidence of mating activity.

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The apparent mating hub happens during the time of year when humpback whale mothers and newborn calves arrive in the area.

The Shark Lab team says the correlation could mean that the sharks are positioning themselves near foraging opportunities, like vulnerable calves or placental falls.

“Mating and foraging on humpback whales may not be mutually exclusive,” Wernli said. “And both could influence tiger shark movement patterns in Hawaii.”

The tiger shark gatherings they observed were not dense but rather diffuse, spanning several kilometers over multiple months.

“This study expands our knowledge of tiger shark mating and challenges our conventional understanding of the term ‘gathering,’” said Meyer. “Together, the results suggest that both reproduction and food availability play key roles in shaping tiger shark movements in Hawaii.”

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During the six-year study, the team was able to safely catch and implant transmitters in large sharks, then keep a vast network of underwater listening stations across the main Hawaiian Islands.

In the future, the Shark Lab team plans to use tags with cameras and other data collecting capabilities to document both their mating behaviors and shark-whale interactions.

This work was funded by the Hawaii Department of Land and Natural Resources and the Pacific Islands Ocean Observing System.



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Meeting set to discuss Kona airport master plan – West Hawaii Today

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Meeting set to discuss Kona airport master plan – West Hawaii Today






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Thieves target temporary water meters across Oahu

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Thieves target temporary water meters across Oahu


HONOLULU (HawaiiNewsNow) – A piece of equipment designed to provide temporary water access across Oahu is now being targeted by thieves, prompting concerns from officials over rising losses and illegal water use.

The Board of Water Supply rents out temporary meters for construction sites, public events and emergency use when potable water is needed in areas without direct service.

But officials say some of the devices are being stolen despite heavy security measures.

At installation sites, the meters are wrapped in thick steel chains and secured with multiple heavy-duty padlocks to deter tampering and theft.

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“For somebody to try and take it, because you saw the chain, it’s the big links. They’re thick links, so you’d have to come with a grinder or an extremely heavy-duty bolt cutter. So it’s not impossible to remove it, but it requires quite a bit of effort to remove it,” said Kathleen Pahinui, public information officer for the Board of Water Supply.

According to the agency, about 22 temporary fire hydrant meters have been illegally removed over the past two and a half years. Eight of those thefts occurred in just the past three months.

Officials say the motive behind the thefts is not confirmed, but potential drivers include scrap value or misuse of the meters to divert water for unauthorized use.

“And we don’t want people basically stealing water because then we all end up paying for that theft,” Pahinui said.

Each temporary meter costs about $3,000 to replace, and the Board of Water Supply says responsibility for protecting the device falls on the permit holder once it is installed.

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“The person who has the contract with us has to replace it,” Pahinui said.

State Sen. Brenton Awa said one stolen meter on the North Shore had been serving the Haleiwa Seed Bank, where volunteers are planting coconut and ulu trees for the community.

“We set this up with the Board of Water so that we’re within the rules, we’re paying for the water, for the project, for the community. And then it just wasn’t here one day,” Awa said.

“It’s a piece of metal on the side of the road. Who’s going to steal this thing? But apparently… it’s worth something,” Awa added.

Under Hawaii law, scrap yards are prohibited from purchasing municipal, utility or state owned equipment without proper documentation.

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Recyclers say materials commonly found in the meters, including brass and bronze, typically sell for about $2 to $3 per pound depending on grade. While the scrap value is relatively low, companies say functioning used meters can resell for hundreds of dollars.

The Board of Water Supply is urging the public to report any suspicious activity involving temporary meters by calling (808) 748-5000.

Copyright 2026 Hawaii News Now. All rights reserved.



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Early-morning 4.5 magnitude quake rattles offshore of Hawai‘i Island | Big Island Now

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Early-morning 4.5 magnitude quake rattles offshore of Hawai‘i Island | Big Island Now


June 17, 2026, 8:39 AM HST

An early-morning magnitude 4.5 earthquake on Wednesday, 11 miles southeast of Pāhala, had no apparent impact on either Mauna Loa or Kīlauea volcanoes.

According to the Hawaiian Volcano Observatory, the shaker struck at 2:14 a.m. at a depth of 21 miles below sea level. More than 169 “Felt Reports” were documented within the first hour of the tremor, which was felt widely across Hawai‘i Island.

The U.S. Geological Survey reported the quake as a magnitude 4.6.

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A 4.5 magnitude earthquake was reported by the Hawaiian Volcano Observatory in the early morning hours of June 17, 2026.

Aftershocks are possible in the coming days to weeks. The Hawaiian Volcano Observatory continues to monitor Hawaiian volcanoes for any changes.

No damage to buildings or infrastructure is expected given the earthquake’s intensity, and no tsunami threat was triggered.

This earthquake is part of the seismic swarm under the Pāhala area, which has been going on since 2019. Earthquakes in this region have been observed at least as far back as the 1960s.

Click here to read more about the swarm.

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