Orcas: Killer Whales (Whales and Dolphins)

Orcas are dolphins that eat fish, seals and sea lions. They are not whales and do not threaten humans, except by catching food that humans want to net and sell. By observing Keiko, the star of the movie "Free Willy" and other orcas, we are learning that "killer whales" are playful, make sounds that are unique to each of their groups and use sophisticated echolocation. Orcas are shown in full-page photos. Learn to recognize an individual orca by its uniquely shaped fin and saddle-patch markings.Victor Gentle is the author of 'Orcas: Killer Whales (Whales and Dolphins)' with ISBN 9780836828832 and ISBN 0836828836.