Orca - Wikipedia
How the Killer Whale Avoids Eating People, Helped 19th-Century Whalers, and Became Public Enemy Number One | Blog | Nature | PBS
Killer Whale | NOAA Fisheries
Killer Whale | NOAA Fisheries
How many killer whales are left in the world? How long orcas live and why they are known as data deficient
Raising sons is draining killer whale mothers, study finds | CBC News
Fate of orcas in captivity - Whale and Dolphin Conservation
New Type Of Killer Whale Found Swimming In Southern Ocean : NPR
Half the world's killer whales may go extinct within 50 years | Natural History Museum
Why are orcas called killer whales? How many are left in the world | NationalWorld
Pacific killer whales are dying — new research shows why
Southern Resident Killer Whales: Facts, Info & More | WWF.CA
Orca (Killer Whale) - Kenai Fjords National Park (U.S. National Park Service)
KUOW - Study: Toxic PCBs threaten orcas around the world
Orca census shows some improvement, but many whales still die before their time
Protecting the Southern Resident Killer Whales - Nature and science
Orcas: Facts about killer whales | Live Science
3 orcas from an extremely endangered group are presumed dead, leaving only 73 | CNN
Understanding the UK's last killer whales | The Independent | The Independent
How Many Killer Whales Are Left In The World - Orca Population - SciQuest
Scientists discover new whale species
Concrete tanks are torture for social, intelligent killer whales | Aeon Essays
Killer whale/orca: New Zealand marine mammals
Killer Whale | NOAA Fisheries
Get to know the Salish Sea orcas - David Suzuki Foundation
