›Researchers have detected the H5N1 bird flu virus in sea otters and sea lions along the San Mateo County coast, after the virus was first discovered in elephant seals at Año Nuevo State Park. While the outbreak appears to be contained to the San Mateo area so far, wildlife officials are closely monitoring the situation. Why it mattersThe spread of the H5N1 virus to marine mammals is concerning, as it could have significant impacts on vulnerable populations like the southern sea otter. The detailsAfter the H5N1 virus was first detected in elephant seals at Año Nuevo State Park in late February, researchers have now confirmed cases in a sea otter and several California sea lions. In late February, researchers found the H5N1 virus in 7 dead elephant seal pups at Año Nuevo State Park.

Source: Los Angeles Times March 12, 2026 23:11 UTC