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.

In a baffling show of generosity, killer whales across the globe are giving fish to humans—and scientists are racing to ...

When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange.

An exceptionally rare sighting of two orcas, also known as killer whales, has been confirmed in Cornish waters ...