Harbour seals are a type of pinniped, native to all the temperate seas in the north. They are small and slender animals. The males can reach a length of 170 cm and weigh up to 100 kilograms and are thus considerably larger than the females. They live in the northern hemisphere both in the Pacific and Atlantic Ocean. Grown harbour seals solely feed on fish. They are clever and skilful swimmers. In some zoos, people can take a look at them doing their tricks in a seal show.