Southern California could be dealing with its worst toxic algae bloom ever. Domoic acid toxicosis associated with a bloom off the Southern California coast is responsible for killing brown pelicans, sea lions, and now at least two whales.

A harmful algal bloom off the Southern California coast continues to sicken and kill marine life, with at least seven dolphins washing ashore this week alone in Venice Beach. Marine experts are taking samples and planning necropsies to determine if domoic acid toxicity is the cause,