General Description: They are a species of mammal pinniped of the family phocid. There are two species; the Northern (Mirounga angustirostris) and the Southern (Mirounga Leonina) elephant seal. It is estimated that the male of the South elephant seal is the biggest pinnipede at the moment, and probably the biggest that has ever existed on planet earth. The female may be 3 meters long (39 inches) and weighs 900 kilograms (1984 lbs). The male can get to 5 meters long (196 inches) and weighs up to 4.000 kilograms (4 Tons). They are considered the species with the biggest sexual dimoephism.

Reproduction: The female goes through an 11 month pregnancy, giving birth to a single pup per year. When babies are born, they are 40 kilograms approximately (88 lbs) and they are black.
After 23 days of being fed by the mother, the pup can weigh about 120 kilograms (264 lbs); during this period the mother can lose 14 kilograms a day (30 lbs), since the mother does not go to the sea for feeding.

The origin of the colony: The first seal elephants were discovered in 2009 (Mirounga Leonina), in Dos Pozos coast of La Antonieta Ranch. It is located 80 kilometres (49.7 miles) from Rawson city (capital city of the province of Chubut – Argentina).

Population: In 2015 we counted 5 harems (geo positioned), each harem with 14 females, and a good number of young elephant seals. As the years go by, the colony has increased till get to 200 animals in 2017 summer.

Feeding: They feed on fish and it is known that they can dive up to 18000 meters deep.