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

The recent autopsy of a partially devoured great white shark confirms a brutal hunting trend—killer whales around the world ...

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 ...

Some baleen whales avoid killer whale attacks by singing songs at deep frequencies that their predators cannot hear.

Avoiding predators is one of the most important jobs for many members of the animal world. Even ocean giants like baleen whales have something to fear from killer whales, their only known natural ...

Orcas, like humans, get baby bumps in the early months of pregnancy and grow larger as the pregnancy advances. Researchers ...

A pod of killer whales made an unexpected visit off the coast of Orange County Thursday. The pod of CA56 killer whales (orcas ...

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

The animal’s dorsal fin was still floppy, indicating it was less than 24 hours old, according to news reports.

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

Recent findings used wildlife forensics and citizen science data to provide the first confirmed evidence of killer whale predation on white sharks in Australia.

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