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Orca (lat. Orcinus orca) is a marine mammal from the infrastructure of cetacean toothed whales (Odontoceti) of the dolphin family.The only modern member of the genus orcas. It is recognized as the largest member of its family and the only real predator among cetaceans, chasing warm-blooded animals. Killer whales are the largest carnivorous dolphins; differ from other dolphins in a contrasting black and white color. Male killer whales reach a length of 10 m and have a mass of up to 8 tons, females - up to 8.7 m long.