Antarctica also has four varieties of seals; the crabeater seal
, the Weddell seal, the elephant seal and the leopard seal.
There are four strictly Antarctic seals, although some individuals may stray as far as the southern coasts of South America, Africa, and Australia, such as the crabeater seal
(Lobodon carcinophagus), the Weddell seal (Leptonychotes weddelli), the Ross seal (Ommatophoca rossi), and the leopard seal (Hydrurga leptonyx).
cohort variation: demographic signal or statistical noise.
On ice, however, the Antarctic crabeater seal
is the fastest sprinter, reaching reported speeds of up to 25 km per hour when chased.
While no modern whales use their teeth to feed this way, Mitchell notes that the Crabeater seal
, which does not eat crabs, has notched teeth that is uses to filter krill and other invertebrates.
The enormous gaur can scarcely fit on his page and the text has to squeeze around his body, while the crabeater seals
, which are extremely numerous, are crowded on to their page with no room to spare.
The Ross Sea slope is also considered a 'hotspot' for the rare Arnoux's beaked whale and is home to more than two hundred thousand crabeater seals
, perhaps 8000 leopard seals and 5000 Ross seals.
Up close, killer whales hunt the floes for sleeping crabeater seals
, while cape petrels, those checkerboard flyers of the cold waters, surf the air curls streaming off the ship.
The data recovered from tagged Crabeater seals
and Adelie penguins revealed their diving and feeding behavior, and researchers discovered some movements that they hadn't suspected.
Similarly, around the Antarctic Peninsula, Adelie penguins, which winter on increasingly scarce sea ice, are being displaced by chinstrap penguins, which prefer open water, just as elephant seals are pushing aside their cold-loving cousins, the crabeater seals