The town of Chatham issued an emergency “red tide” alert Saturday that closed down shellfishing until further notice.

Florida red tide, Feb. 2025. Florida Public Radio Emergency Network (FPREN) Storm Center | By Irene Sans Red Tide is a harmful algal bloom caused by a naturally occurring alga (a plant-like ...

Department of Health in Lee County has released another red tide advisory, this time for Tarpon Bay Road beach park. A red tide bloom has lingered along the coast since late last summer, and ...

Fighting future ‘red tides’ in San Francisco Bay Reductions in nutrient pollution are already underway — but a real cure could cost up to $15 billion. Is it worth it?

A red tide that killed thousands of marine animals in the San Francisco Bay Area last year has returned and may already be the culprit behind additional deaths.

Officials with the San Francisco Bay Regional Water Quality Control Board said Thursday that harmful algal blooms also known as "red tides" found recently in parts of the Bay have not so far ...

A toxic ride tide was detected last weekend from the Berkeley Marina, Emeryville, Albany, Richardson Bay and Muir beach, according to experts.

A toxic red tide has returned to San Francisco Bay, raising fears of a reprise of last summer’s unusually large fish die-off. Experts report that harmful blooming algae was detected last weekend ...

A toxic red tide has returned to San Francisco Bay, raising fears of a reprise of last summer's unusually large fish die-off.

This false-color image shows the west-central coast of Florida on February 26, 2023, during a red tide event that began in October 2022.

This NASA false-color image shows the west-central coast of Florida on February 26, 2023, during a red tide event that began in October 2022. Seagrass is being threatened.

A red tide in 2021 in China's Xianglu Bay. A red tide in 2021 in China's Xianglu Bay. Can red tide make you sick? Harmful algae blooms have been reported in every U.S. coastal state.