Since February, marine rescue centers have been overwhelmed responding to sea lions, dolphins and birds found sick and dying on local beaches.

A team was expected to examine a dead whale that washed up near Surfers Point in Ventura. Here's what to know.

The whale that beachgoers saw floating off Alameda on Sunday was the fourth gray whale to die in the bay or surrounding waters in a month. Researchers do not yet know the reason for the cluster of ...

Four dead whales have been found in the San Francisco Bay area in less than two weeks, with some experts expressing concern.

Baleen whales are unique and breathtaking animals and are known for undertaking some of the longest migrations in the world.

Gray whales, a signature of the Washington coast, are dying by the thousands, victims of declines in Arctic sea ice.

Thousands of gray whales are migrating past the Oregon coast in poor condition, with record-low calf numbers and visible ...

Thousands of gray whales now migrating north from Baja California are in such poor shape and so few calves were born this ...

Taken together, the deaths have raised the specter of past “unusual mortality events” that caused whales to die in higher-than-normal numbers.

Entanglement is one of the top threats for gray whales as they get trapped entirely or drag the gear with them for miles, ...

A dead 50-foot gray whale washed ashore in Huntington Beach on Friday, according to officials with the Pacific Marine Mammal Center. The cause of death of the young adult female is not yet known ...