Conservationists found 168 wedge‑tailed shearwaters dead at Kauaʻi's Shipwreck Beach; experts point to cats and urge stronger predator control and reporting.

DLNR crews found roughly 200 tires dumped on Puʻu ʻŌhiʻa Trail and warn that dumped yard waste can spread invasive pests and threaten drinking water.

UH is moving Lyon Arboretum under CTAHR to expand hands-on labs and research access for students while keeping public programs and staff in place.

Wai'anae District Park was renamed April 23, 2026 to honor Shinyei Nakamine and the 100th Infantry Battalion, linking a local park to a World War II legacy.

Iao Valley State Monument will close April 27–June 26 for pedestrian bridge upgrades, temporarily blocking access to the Iao Needle during the spring travel season.

Researchers filmed honu eating invasive Chondria tumulosa at Midway Atoll; the finding suggests turtles could trim outbreaks but might also carry fragments between atolls.

Honolulu Ocean Safety posted warnings after an 'aggressive' shark was spotted near Diamond Head at about 7:17 a.m.; lifeguards urged people to avoid the water.

Lifeguards posted warning signs at Electric Beach after a roughly 10-foot shark was seen offshore. Officials said the animal was non‑aggressive and no injuries were reported.

The National Park Service will run limited tours of Honouliuli, Oahu’s hidden WWII internment site, this summer — a managed opening of the 123‑acre gulch.

State biologists found invasive Avrainvillea erecta along Kauai's south shore, with some patches topping 80% cover.

A foil surfer off Oahu filmed a hammerhead sliding beneath his board in January; state officials say such encounters are rare and usually nonfatal.

A Waialua woman says a bag of Sta‑Green soil bought at Waipahu Lowe's contained about 60 coconut rhinoceros beetle larvae. Officials urge shoppers to inspect bagged soil and report suspected pests.

State agriculture officials warn Merrie Monarch visitors not to move ʻōhiʻa off Hawaiʻi Island as rapid ʻōhiʻa death continues; airport checks and hoʻihoʻi baskets will be available.