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

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 ...

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

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

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

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

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

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

Orcas, or killer whales, are deadly and beautiful apex predators.

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

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

Alisa Schulman-Janiger, director of the ACS-LA Gray Whale Census and Behavior Project, told FTW Outdoors that Jean Huber and Christy Varni discovered the floating carcass at mid-morning less than a ...