- Alaska Fish and Game: Orca
- Reviews size and appearance, distribution, pods, migration, photoidentification in Alaska, diet and food habits, reproduction, and sources of mortality.
- American Cetacean Society: Orca (Killer Whale)Orcinus orca
- Explains species, classification, name, description, feeding, mating, natural history, and status.
- Animal Bytes: Killer Whale
- Looks at common name and taxonomy, fast facts, fun facts, ecology, and conservation. From SeaWorld.org.
- Animal Diversity: Killer Whale (Orcinus orca)
- Provides pictures, classification, geographic range, habitat, physical description, reproduction, longevity, behavior, food habits, and status.
- Enchanted Learning: Orca (Orcinus orca)
- Offers description, diet, communication, habitat and range, reproduction, population, classification, and links to activities.
- Kids' Planet: Killer Whale (Orcinus orca)
- Covers status, description, size, population, lifespan, range, habitat, food, behavior, offspring, threats, and protection.
- Killer Whale (Orcinus orca)
- Contains factoid, status, population, threats, survival, and locations. From National Parks Conservation Association.
- Killer Whale, Orcinus orca
- University of Guelph details description, distribution, reproduction, ecology, and behavior.
- National Geographic: Killer Whale (Orca)Orcinus orca
- Image and range map accompany species profile, fast facts, sounds, gallery, and printable factsheet.
- Orca, Killer Whale - Orcinus Orca
- America Zoo reviews status, classification, name, habitat, description, behavior, and reproduction.
- Whale Images: Killer Whale Facts
- Explores name, classification, general description, physical characteristics, diet and teeth, activities, senses and communication, and lifespan.
- Why Are Orca Called Killer Whales?
- HowStuffWorks gives history of names and reputation, size and appearance, history, social structure, communication, and feeding habits.
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