The 39-foot gray whale carcass was discovered floating off Marina del Rey on Saturday with most of its head missing.

Two Los Angeles-area boaters on Saturday spotted a juvenile gray whale that had recently been killed by orcas and was missing ...

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The rare orca pod has only been documented seven times since 1993. The two females and three kids were seen about 2.5 miles from Newport Beach last week.

New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

Learn more about how baleen whales split into two groups — fight or flight — and how these groups determine how loud they sing.

Killer whales are the only natural predator of baleen ... The “fight” club includes right, bowhead, gray and humpback whales. The research was published Jan. 31 in Marine Mammal Science.