False Killer Whale

Adventure step • Meet the species

Overview

The false killer whale is a large and powerful dolphin that, despite its name, is not a true killer whale but belongs to its own distinct genus. The name comes from its superficial resemblance to the orca, but the false killer whale is more slender and completely black without the white markings that characterize true killer whales. It has a characteristic rounded head with a prominent melon and a narrow, forward-curving upper jaw. The body is elongated and elegant with a relatively small dorsal fin positioned midway along the back. These marine mammals are known for their intelligence and complex social structures. They live in stable family groups where members maintain strong bonds throughout their lives. The false killer whale is one of the fastest swimmers among dolphins and can reach speeds of up to 35 kilometers per hour. They are also skilled divers that can hold their breath for up to 15 minutes and dive to depths exceeding 500 meters when hunting squid and large fish. The false killer whale has a varied repertoire of sounds for communication, including whistles, clicks, and pulsed calls. These sounds are used both for echolocation when hunting and for social interaction with pod members. They are very playful animals often observed bow-riding with ships and leaping high out of the water. Unfortunately, the species has sometimes been involved in mass strandings where entire pods can beach themselves simultaneously, likely due to their strong social bonds where individuals follow their pod mates even to death. Today, the false killer whale is classified as Near Threatened by the IUCN due to declining numbers in certain areas. The main threats include bycatch in fishing nets, loss of prey due to overfishing, ocean pollution with heavy metals and plastics, and noise from ships that disrupts their communication and echolocation. Climate change also affects their distribution and access to food.