Hundreds of Navy SEAL candidates became sick within a week of being exposed to contaminated ocean water at the Naval Amphibious Base (NAB) in Coronado, California, a report from the U.S. Department of ...

Red tide is caused by a harmful algae bloom. It can bring respiratory problems and even fish kills in high concentrations.

Marine biologists at the University of California Santa Cruz have tagged thousands of northern elephant seals with smart ...

Scientists have developed a technique for water alkalinity analysis that requires no specialized equipment, using only ...

Due to current rainfall, the Los Angeles County Department of Public Health advises beach users to avoid all water contact, ...

Atmospheric rivers almost guarantee that San Francisco, with its sewage system, will dump millions of gallons of raw sewage ...

A spill of treated sewage from Oxnard's wastewater treatment plant closed beaches near the facility on Perkins Road.

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the ocean is warming at an unseemly pace—at least, that’s according to a new study from scientists at the University of Reading. “If the oceans were a bathtub of water, then in the 1980s ...

On Thursday, health officials issued a clarifying notice advising beachgoers to view ocean water quality updates on an interactive map available at PublicHealth.LACounty.gov/beach. That clarification, ...

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An Ocean Water Quality Rain Advisory will be in effect for all Los Angeles County beaches until 8 a.m. Thursday, due to the rain that fell earlier this week and traditionally carries potentially ...