Sick sea lions are being reported in increasing numbers, with experts warning that the mammals are suffering from a toxic illness. The illness is causing some sea lions to die. A recent fatality was reported, and a surge in cases is occurring in certain areas.

Video footage from beaches shows sick sea lions along the shore. Scientists believe that blooming algae is producing toxic domoic acid, which is being absorbed by small fish and then eaten by the sea lions.

Further details about the situation and the affected areas are available from the source.