Killer whale attacks on the rise, baffling researchers

Watch: Killer whale attack caught on camera near Morocco

Watch as killer whales attack a boat off the coast of Portugal

Watch: Video shows 1st detailed evidence of killer whales hunting sharks in South Africa

Killer whales surround ‘monster’ great white shark during attack

Killer Whale Fact Sheet

20 Killer Whale Facts About Orcas - Fact Animal

Orcas: Facts about killer whales