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

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

Orcas, also called killer whales, are apex predators of the ocean. Their intelligence, hunting skills, and sheer power make ...

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

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

Over time, that name morphed into "killer whales." Scientists don't know whether orcas kill for fun. The marine mammals do some things, like killing and tossing dead porpoises in the air ...

A welcome sight Thursday morning: Orcas in the Puget Sound. Experts say there’s one distinct thing people should know about ...

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

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

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

Pack-ice killer whales are highly social creatures, communicating through various vocalizations like pulsed calls and whistles. For the first time, researchers have recorded these vocalizations ...

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 ...