Southern Right Whale
This marine mammal, in the cetacean family, is protected in Argentina since 1937. It is 13 to 15 m tall, and weighs 40 to 50 tons. Southern right whale stays in Península Valdés at winter to mate or give birth to. Around 450 and 600 whales arrive to Antarctica as of May, give birth to 200 calves between July and October, and suckle them for one year. Gestation lasts 10 to 13 months. Males are subject to a fierce competition, bricking or beating with its tail or fins to conquer the maximum number of females. At summer time, in December, whales return to the south into the cold waters where they are fed protected by their dense fat layer that serves as a thermal insulator. Whales feed on krill and plankton, and like all mammals, they have warm blood, breathe fresh air, are viviparous and generally have only one clave at a time. Unlike dolphins, whales have baleens instead of teeth. They are vulnerable specie.