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The hooded seal or bladdernose seal (Cystophora cristata) is a large phocid found only in the central and western North Atlantic, ranging from Svalbard in the east to the Gulf of St. Lawrence in the west. The seals are typically silver-grey or white in color, with black spots that vary in size covering most of the body. [3]
Testing Hamilton's selfish herd effect, Alta De Vos and Justin O'Rainn (2010) studied brown fur seal predation from great white sharks. Using decoy seals, the researchers varied the distance between the decoys to produce different domains of danger. The seals with a greater domain of danger had an increased risk of shark attack. [44]
The skull of the leopard seal. The leopard seal has a distinctively long and muscular body shape when compared to other seals. The overall length of adults is 2.4–3.5 m (7.9–11.5 ft) and their weight is in the range 200 to 600 kilograms (440 to 1,320 lb), making them the same length as the northern walrus but usually less than half the weight.
Crabeater seals can raise their heads and arch their backs while on ice, and they are able to move quickly if not subject to overheating. Crabeater seals exhibit scarring either from leopard seal attacks around the flippers or, for males, during the breeding season while fighting for mates around the throat and jaw. [3]
"Other marine mammals like seals have blubber to keep them warm. But sea otters don't have blubber, so they have to eat an enormous amount of food every day," said Wasson. While clams are their ...
The Caribbean monk seal (Neomonachus tropicalis), also known as the West Indian seal or sea wolf, was a species of seal native to the Caribbean.The main natural predators of Caribbean monk seals were large sharks, such as great whites and tiger sharks, and possibly transient orcas (though killer whales are not often sighted in the Caribbean); however, humans would become their most lethal ...
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