Massive sea creatures were spotted off the coast of California, onlookers said. Four fin whales were seen among thousands of ...

Types of large sea slugs called the California sea hare and black sea hare can be found off the coast and in tide pools ...

An aggressive sea lion sent surfers running this week after it repeatedly went after them, even coming onto the beach, video of the incident showed. The sea lion was suffering from severe domoic ...

Although most of the marine mammals affected by domoic acid toxicity are California sea lions, other animals are also susceptible to its effects, according to the Marine Mammal Center. Domoic acid ...

A routine surf session in Southern California turned into a harrowing ordeal between surfer RJ LaMendola and a sea lion that chased him down and bit him. "It had this look in its eye that it didn ...