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.

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

Researchers examining 20 years of data on orca sightings have discovered a worrying trend linked to the receding ice, ...

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