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 ...

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

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 diet from the water ...

Our guide goes over everything you need to know about catching the Ancient Orca in Fisch’s Orca Migration Event.

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

After several recent orca pod sightings in Waikato, the Department of Conservation is reminding people to respect the rules ...

After several recent orca pod sightings in Waikato, the Department of Conservation (DoC) is reminding people to respect the ...

The newborn orca, only a few hours old, has been photographed off Bremer Bay on Western Australia's southern coast, in a rare sighting which could provide answers about the species' behaviour.

Six environmental groups are suing two federal ministers over a delay in issuing an emergency-order recommendation to protect B.C.’s endangered killer whale population.

For a second time, the world watched as Tahlequah, an endangered southern resident killer whale, struggled to keep her dead newborn ... The southern residents are already listed as endangered under ...