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Nei Maldaner in the Expedition Circunavegation Antarctica 2006 In the Ice-broken Kapitan Khlebnikov. Check about kinds of Seals in Antarctica.
Elephant Seal: polygamous, Social inofensive, feed on squid. Occur in Scotia Arc islands and Antartic Penisula, haul out on land, common. 3600Kg. 600.000 Population.
Elephant seals are large, oceangoing mammals in the genus Mirounga, in the earless seal family (Phocidae). There are two species: the Northern Elephant Seal, M. angustirostris, and the Southern Elephant Seal, M. leonina. Both were hunted nearly to extinction by the end of the nineteenth century, but numbers have since recovered. The Northern Elephant Seal, somewhat smaller than its southern relative, ranges over the Pacific coast of the U.S. and Mexico. The Southern Elephant Seal is found in the southern hemisphere on islands such as South Georgia, Macquarie Island, and on the coasts of New Zealand, South Africa, and Argentina in the Peninsula Valdés, which is the fourth largest elephant seal colony in the world and the only growing population.
Crabeater Seal: Gregarious, found in loose peak in large numbers, can be dangerous, moves fastover ice, krill eater. 200kg. 30.000.000 population.
The Crabeater Seal, Lobodon carcinophagus, is one of the most remarkable, though least known, of the mammals of the world. At a population of 8 to 50 million (LAWS 1973), it is perhaps the "second most numerous large species of mammals on Earth, after humans. More than one in every two seals in the world is a Crabeater Seal and the population biomass of Crabeaters is about four times that of all other pinnipeds put together . Despite its name, its diet does not include crabs. Instead, a crabeater seal's unusual multilobed teeth enable this species to sieve krill from the water. Its dentition looks like a perfect strainer, but how it operates in detail is still unknown. The food of Crabeater Seals consists 98 % of Antarctic krill, Euphausia superba. The seals consume over 63 million tonnes of krill each year. They live and reproduce in the pack ice zone around Antarctica.
Weddell seal: Polygamous, social inofensive, in peek ice of continent, fishester, common. 450kg. 1.000.000 population.
The Weddell Seal (Leptonychotes weddellii), a "true seal", is named after Sir James Weddell, commander of British sealing expeditions in the Weddell Sea. They occur in large numbers and inhabit the circumpolar region of the southern hemisphere, including Antarctica. It is estimated that there are approximately 800,000 individuals today. They can regularly be seen in the many seasonally ice-free islands along the Antarctic Peninsula. These pinnipeds are not thought to migrate, and any local movements are usually the result of changes in ice conditions.
Ross Seal: Solitary, inofensive, found in central pack ice, rare, squid eater. 190Kg. 200.000 Population.
The Ross Seal (Ommatophoca rossii) is a carnivorous seal of the family Phocidae and only species of the genus Ommatophoca. It is named after Sir James Clark Ross, who led the ''erebus'' and ''terror expedition to the Antarctic. It is native to the Antarctic, including the Ross Sea, from which its name is derived."
Leopard Seal: solitary, dangerous, found on ice and land, Common. Preys on penguins and seals. 540Kg. 500.000 population.
The Leopard Seal (Hydrurga leptonyx) is one of the "true seals" belonging to the family Phocidae. It is the only species in its genus. Leopard Seals are the second largest species of seal in the Antarctic (after Southern Elephant Seals), and are near the top of the Antarctic food chain. Killer Whales are the only natural predators of Leopard Seals.
Fur Seal: Gregarious, fast over land bites whitout provocation, dangerous. 160 Kg. 200.000 populations.
Fur seals make up one of the two distinct groups of mammals called "seals". Both the fur seals and the true seals are members of the Pinnipedia, which is usually regarded as a suborder of the order Carnivora but sometimes as an independent order. However, the fur seals, like their close relatives the sea lions, retain some ability to walk on land as their hind limbs can be brought
forward under the body to bear the animals weight, and retain small but visible external ears.
Source:
Nei Eugenio Maldaner City:
Antártica-EX Photos: Nei Eugenio Maldaner Published: Debora Americo da Silva Date: 07/30/2007
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