Marine biologists say a toxic algal bloom has been occurring off the coast of California more often than before, killing sea lions, dolphins and other marine mammals at an alarming rate.

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 significant ...

SAN DIEGO — A dangerous toxic algae bloom off the coast of San Diego is having a devastating effect on local wildlife. It's causing sea lions and, more recently, pelicans to become seriously ill ...

Toxic algae blooms contain a neurotoxin that is likely impacting the sea lions. Sea lions on the California coast are reportedly displaying strange behavior, likely due to a harmful algae bloom ...