"One of the largest, longest, and most lethal." Officials share update after lethal threat terrorizes West Coast beaches: ...

Marine mammal care centers worry NOAA furloughs and cuts over a longer period could reduce oversight for ocean creatures.

TIBURON, Calif. (KGO) -- By now, we know that the Dungeness crab season has been delayed and we know the reason a toxic acid produced by algae in warmer, El Nino waters. One of the world's foremost ...

Noelle Held, a USC microbiologist and oceanographer, collects a water sample at Surfrider Beach on June 1. (Hon Wing Chiu / For The Times) When scores of dead and dying sea animals began washing up on ...

A year after the historic removal of four dams along the Klamath River in Northern California and Southern Oregon, Chinook ...

Authorities are testing after reports surfaced of toxic blue-green algae blooms at two Lake Tahoe beaches. The investigation began shortly after a woman posted a video on TikTok where she claimed her ...

Thurston County has issued a health advisory for Offut Lake, shown here. Thurston County is warning the public to avoid Offut Lake and Lake Lawrence due to toxic algae blooms. Staff from the ...

Neurotoxin levels were highest in the dolphins stranded during warmer months, when harmful algal blooms are more severe.