The colorful waves are a sign of a natural phenomenon that can harm humans and pets, experts say.

A health alert has been issued for blue-green algae toxins in the Caloosahatchee River at the Sebastian Canal. Learn how to ...

Two odd dolphin sightings have renewed concerns that harmful algal blooms off the California coast may be linked to ...

A dolphin seen struggling in shallow water off the coast of San Clemente this week has raised concerns among marine mammal rescuers after another dolphin was found dead nearby just days earlier. Video ...

Fast-spreading hardy mussels from China, already in Delta and spreading across California, could cost millions to control ...

Ohio's plan relies on convincing farmers to make changes to practices they've used for years, such as no longer spreading manure on soaked fields and encouraging them to use the right amount of ...

TikTok A significant increase in seaweed along some Mexican beaches is becoming increasingly evident, according to Inside ...

New satellite images of Lake Erie show what looks like green slime covering the blue water near Point Pelee National Park and Pelee Island. The latest images by the National Oceanic and Atmospheric ...

According to The Marine Mammal Center, the organization runs a veterinary hospital in Sausalito and a 24-hour rescue hotline ...

Historically warm waters in 2014 caused strandings of malnourished birds, sea lions along beaches, worsened drought ...