Killer whale - belongs to the dolphin family and is the only representative of the genus of killer whales today. They have a contrasting black and white color. Male killer whales reach a length of 10 m and weigh up to 8 tons, females up to 8.7 m in length. The dorsal fin in males is high (up to 1.5 m) and almost straight, while in females it is about half as low and curved. Predators with a wide range of food, live in packs. The harsh nickname - the killer whale - the killer whale received largely due to the many bloody stories and legends, retold and embellished for greater interest by storytellers, and popularized by cinema. There are no documented cases of attacks on humans in the wild. There are known cases of killer whales killing people in captivity, when an angry animal drowned the attendants, however, these attacks were not associated with eating behavior. The killer whale is currently critically endangered according to the US Federal Species List. In Russia, it is included in the new Red Book.