While well-documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in ...

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

The most recent census found 73 southern resident killer whales. Of those, 22 were observed to be in poor condition. Since ...

A study published in the journal Oceans details the remarkable chance encounter between a group of citizen scientists on a ...

Researchers analyzed 1,310 killer whale sightings spanning 40 years and, using species distribution modelling, pinpointed three key Australian habitats, the Bonney Upwelling (South Australia/Victoria) ...

Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

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A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of ...

The report recommends ensuring the orcas have "priority access" to early-season chinook in the Fraser River through fishing closures. It also calls on government to identify seasonal and annual prey ...

Scientists documented 34 remarkable cases of wild killer whales trying to give food to humans across four oceans over 20 ...

We were amazed when we first noticed this behavior,” said Michael Weiss, research director at the Center for Whale Research in the U.S. state of Washington. What started as a puzzling observation in ...

Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans.