The turquoise water of Hōnaunau Bay in Hawaii, an area popular with snorkelers and divers, is teeming with spiny creatures ...

Sea lions do not often attack humans, but a slew of recent assaults points to an algae that scientists say is poisoning the animals — and making them more aggressive. This algae releases a ...

Sea urchins have mixed reviews in the saltwater aquarium scene. Some people love them because they are fascinating to watch ...

Ten fur seals and hundreds of fish washed up dead on a Pribilof beach last year. New research links the die-off to warming ...

The algae was buried in sediment beneath the Baltic Sea with no light or oxygen. Researchers have successfully revived algae that remained dormant within sediment at the bottom of the Baltic Sea ...

Researchers have identified a species of blue-green algae in the Duluth-Superior harbor that’s capable of producing harmful ...

SAN JUAN, Puerto Rico (AP) — A record amount of sargassum piled up across the Caribbean and nearby areas in May, and more is expected this month, according to a new report.

SAN DIEGO — A troubling situation is unfolding along the San Diego coastline as a dangerous algae bloom leads to an alarming rise in sea lions falling seriously ill. The bloom has caused a ...

Now, 32-year-old Christopher Hurtado, of Santa Paula, has pleaded guilty “to two felony counts related to the beating of a sea lion suffering on a Ventura beach from recent algae blooms,” the Ventura ...

An invasive species of algae is driving increases in mercury levels in the food chain. The algae is also contributing to erosion.