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ⓘ Pinnipeds are the seals and their relatives, a group of semi-aquatic marine mammals. The Pinnipedia is in the Order Carnivora. There are three seal families: Od ..




Pinniped
                                     

ⓘ Pinniped

Pinnipeds are the seals and their relatives, a group of semi-aquatic marine mammals. The Pinnipedia is in the Order Carnivora. There are three seal families: Odobenidae, Otariidae, and Phocidae.

Seals are sleek-bodied and barrel-shaped. Their bodies are well adapted to the aquatic habitat where they spend most of their lives. Pinnipeds have flippers for hands, big bulky bodies, doggish faces, and big eyes. Unlike cetaceans, pinnipeds have their noses on their faces, and each nostril of the nose closes when the pinniped goes underwater. Like cetaceans, pinnipeds have a thick layer of blubber fat just under their skin: this blubber keeps them warm in cold waters and keeps them fed during times when food is not easily found. When they cannot find food, they live off the fat in the blubber.

Pinnipeds are carnivorous. This means they eat only meat such as fish or squid and not plants. However, almost all pinnipeds can be eaten by polar bears, sharks and killer whales.

Seals are often trained in zoos or aquariums to put on shows. However, in Sweden, it is illegal to train a seal to balance a ball on its nose.

                                     

1. Sleep

Pinnipeds sleep in the water. They may also sleep on land. In both environments, there is a danger. At least in the northern hemisphere, there is danger from polar bears on land, and in the water, there is danger from sharks. While sleeping in water, the animals go through different stages of sleep. They do some behaviors during sleep: they come to the surface occasionally to breathe, and they now and then open an eye for a period of time. The details vary in different species or groups. Similar adaptations are found in cetaceans like dolphins.

                                     

2. Taxonomy

  • Genus Monachus
  • Tribe Monachini
  • Subfamily Monachinae
  • Family Phocidae Earless seals or true seals
  • Genus Mirounga: Elephant seals
  • Tribe Mirungaini
  • Genus Ommatophoca
  • Ross seal Ommatophoca rossii
  • Tribe Lobodontini
  • Crabeater seal Lobodon carcinophagus
  • Genus Lobodon
  • Leopard seal Hydrurga leptonyx
  • Genus Hydrurga
  • Weddell seal Leptonychotes weddellii
  • Genus Leptonychotes
  • Hooded seal Cystophora cristata
  • Genus Cystophora
  • Subfamily Phocinae
  • placed here
  • Genus Erignathus
  • Bearded seal Erignathus barbatus
  • Tribe Phocini
  • Genus Histriophoca
  • Ribbon seal Histriophoca fasciata
  • Genus Phoca
  • Harp seal Phoca groenlandica, formerly Pagophilus groenlandicus
  • Common seal or Harbor Seal Phoca vitulina
  • Spotted seal Phoca largha
  • Caspian seal Pusa caspica, formerly Phoca caspica
  • Baikal seal or Nerpa Pusa sibirica, formerly Phoca sibirica
  • Ringed seal Pusa hispida, formerly Phoca hispida
  • Genus Pusa
  • Genus Halichoerus
  • Grey seal Halichoerus grypus
  • Antarctic fur seal Arctocephalus gazella
  • Brown fur seal Arctocephalus pusillus
  • Family Otariidae Eared seals
  • Genus Arctocephalus Fur seals
  • Northern fur seal Callorhinus ursinus
  • Genus Callorhinus
  • Genus Eumetopias
  • Steller sea lion or Northern Sea Lion Eumetopias jubatus
  • Australian sea lion Neophoca cinerea
  • Genus Neophoca
  • Genus Otaria
  • South American sea lion or Southern Sea Lion Otaria flavescens, formerly Otaria byronia
  • New Zealand sea lion Phocarctos hookeri
  • Genus Phocarctos
  • California sea lion Zalophus californianus
  • Genus Zalophus
  • Family Odobenidae Walruses
  • Walrus Odobenus rosmarus
                                     
  • land animals. Sea lions are also fierce fighters, just like lions. The pinniped species called sea lion are: Steller sea lion or northern sea lion Eumetopias
  • otariids are marine mammals of the family Otariidae, one of the three pinniped families. Family Otariidae Eared seals Genus Arctocephalus Fur seals
  • true seals are marine mammals of the family Phocidae, one of the three pinniped families. Family Phocidae Subfamily Monachinae Tribe Monachini Genus Monachus
  • the only species of the family Odobenidae, which is one of the three pinniped families. They live in the cold northern seas around North America and
  • Falkland Islands, Argentina, Uruguay and Brazil. Campagna, C. IUCN SSC Pinniped Specialist Group 2008 Arctocephalus australis IUCN Red List of Threatened
  • fur seal, or long - nosed fur seal. Goldsworthy, S. Gales, N. IUCN SSC Pinniped Specialist Group 2008 Arctocephalus forsteri IUCN Red List of Threatened
  • Fur seals are any of nine species of pinnipeds in the Otariidae family. One species, the northern fur seal Callorhinus ursinus inhabits the North Pacific
  • Erignathus barbatus also called the square flipper seal, is a medium - sized pinniped It is found in and near to the Arctic Ocean. Fossils indicate that, during
  • well as Baltic and North Seas making them the most wide - ranging of the pinnipeds walruses, eared seals, and true seals The females live longer than
  • to breathe. Dolphin groups or species have their own way of sleeping. Pinnipeds like seals, can sleep like dolphins. The brain of a dolphin is like a
  • The hooded seal Cystophora cristata is an arctic pinniped It is found only in the central and western North Atlantic. It ranges from Svalbard in the