Killer whales are the only natural predator of baleen whales—those that have "baleen" in their mouths to sieve their plankton ...

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

A mother killer whale's 'grief procession' for her dead newborn calf has come to an end. Observed swimming with other members ...

Recent findings used wildlife forensics and citizen science data to provide the first confirmed evidence of killer whale ...

According to their results recently published in the journal Ecology and Evolution, the culprit is clear: a killer whale ...

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

Based on DNA analysis from the bite wounds on the carcass of a large white shark washed ashore near Portland in Victoria in ...

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

A newborn killer whale calf spotted off the southern coast of WA could be one of the youngest ever seen in Australian waters.

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 ...