Are we watching a real-time extinction of southern resident killer whales?
Orca 'killer whales' spotted off Pismo Beach
How long do Orcas live? Fast facts on killer whale's lifespan, diet
8 Surprising Facts About Orcas
Killer Whales Are Speciating Right in Front of Us - Scientific American
Wild Orca Killer Whales Swimming in HD - Compilation
Orca guide: diet, how they hunt, and what they're related to - Discover Wildlife
Orca guide: diet, how they hunt, and what they're related to - Discover Wildlife
Find Out Where Killer Whales Live
Raising Sons Places A Damaging Burden On Killer Whale Mothers