The Russian government takes action weeks after video footage showed the animals languishing in freezing waters.

MIAMI — Activists are renewing their efforts to release a killer whale named Lolita back into the Pacific Ocean. The ...

Killer whales in aquariums regularly eat ice cubes, even though ice provides no calories or nutrients. It's a curious practice that has generated many questions because wild orcas never encounter ice ...

Scientists filmed the way killer whales hunt together. These images show one of the animals turning toward the other after a tail slap delivers a shock to herring. Paolo Domenici et al., Current ...