Warmer waters from a building El Nino may one reason for the recent great white shark sightings in Santa Cruz County.
Big purple sea slugs are washing up on East Bay beaches this summer to the wonder and curiosity of beach combers and naturalists.
For the first time ever, online and in real time, scientists as well as the public can detect and track the locations of white sharks along California’s central coast.
The U.S. Navy is seeking permits to expand sonar and other training exercises off the Pacific Coast, a proposal raising concerns from animal advocates.
New research suggests there are as many blue whales living off the coast of California as there were before humans started hunting them to near extinction 110 years ago.
Recent shark sightings in Southern California, one the ended in an attack on Saturday, is enough of a reason to want to stay dry on shore this summer. But data shows shark attacks are down.
A man who was attacked by a great white shark off a Southern California beach is describing how quickly a routine swim turned into a bloody nightmare.
California marine scientists are collecting samples from sea mammals around the state in an effort to create a map of toxic hot spots.
Marine scientists are finding a large number of dead starfish along the West Coast stricken with a disease that causes the creatures to lose their arms and disintegrate.
A brood of weedy seadragon babies finished hatching last week at the Monterey Bay Aquarium, aquarium officials said.