Southern Right Whales (Eubalaena Australis). "Right" refers to the fact that in the 19th century these whales were regarded as the "right" whales to catch, because they were rich in oil, slow swimmers, easy to catch and easy to handle as they floated when dead. There are two species of "right" whales, one in the northern hemisphere and the other in the southern hemisphere. The northern population is endangered but the southern population is healthy. Southern right whales are baleen whales. Krill forms a large part of their diet and they eat up to 1.5 tons of it per day. They are seasonal feeders, eating in winter and living off their blubber in the breeding months in the north. Adult females are slightly larger than the males and on average are 15 m long and weigh about 40-45 tons. Their most striking feature are the 'callosities' (horny growths) behind the blowholes, and on the face. Their other distinguishing feature is their V-shaped blows. They are black or dark grey in colour and have no dorsal fin. There is a really good article about Right Whales in the National Geographic (Oct-2008).