Killer whales lingering in increasingly ice-free Arctic Ocean | College of the Environment
Orcas: Facts about killer whales | Live Science
How long can whales live outside of water as they are mammals and were land animals a long time ago? - Quora
How long can orcas stay out of water? - Quora
Cut the toxins and boat noise, and boost salmon, so orcas can survive | The Seattle Times
Tanked: Killer Whales in Captivity | Hakai Magazine
All About Killer Whales - Adaptations | SeaWorld Parks & Entertainment
Orca | National Wildlife Federation
Captive orcas - Wikipedia
Half the world's killer whales may go extinct within 50 years | Natural History Museum
Orca | Defenders of Wildlife
How long can whales live outside of water as they are mammals and were land animals a long time ago? - Quora
Can whales survive in fresh water? - Baleines en direct
Ships' noise is serious problem for killer whales and dolphins, report finds | Whales | The Guardian
Killer Whale Facts | Weight, Size, Lifespan and Diet | Whale Facts
What Can Killer Whales Teach Us About Menopause?
7 Reasons Killer Whales Are Evil Geniuses - The Atlantic
Killer! Whales hit the beach to hunt
Orca - Wikipedia
Orca moms feed adult sons, a move that may lead to fewer offspring : NPR
Orcas Are Able to Kill and Eat Blue Whales, Scientists Confirm - The New York Times
