Antarctic animals Home > About Antarctica > Animals Penguins Penguins are flightless birds that are highly adapted for the marine environment. Seals & sea lions Seals and sea lions are one of the few groups of marine mammals that live in the Antarctic. Whales 4 species of toothed whales and 6 species of baleen whales are found in Antarctica. Fish There are only a few types of Antarctic fish. They are all well-adapted to the cold. Flying birds Over 100 million birds breed around the rocky Antarctic coastline and offshore islands. Krill Krill is a general term used to describe about 86 species of crustaceans found in open oceans. Land invertebrates Terrestrial invertebrates are the most species-rich animal group found in Antarctica. Salps Salps are planktonic chordates without ceolom, segmentation or bony tissue. Seabed (benthic) communities Learn about the plants that live on the seabed around Antarctica. Sponges Antarctic sponges are long-lived and sensitive to disturbance, reflecting the health of their environment. Squid Squid are invertebrates. They range in size from barely 1 cm to almost 27 m long! Adapting to the cold Find out how Antarctic animals are adapted for some of the coldest environments on earth. This content was last updated 12 months ago on 27 October 2020.