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Phocids and walruses swim by moving their hind-flippers and lower body from side to side, [43] while their fore-flippers are mainly used for steering.
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They are unique among carnivorans in that their orbital walls are mostly shaped by the maxilla which are not contained by certain facial bones. More than 100,000phocids (especially ringed seals) as well as around 10,000walruses are harvested annually by native hunters. An exception to this is the walrus, where females form dense aggregations perhaps due to their patchy food sources.We recommend leaving the coating for at least 24 hours after application before washing for the first time. They have a layer of fat, or blubber, under the skin to keep warm in the cold water, and, other than the walrus, all species are covered in fur. Otariids establish territories containing resources that attract females, such as shade, tide pools or access to water. They will happily feed on the carcasses of beluga whales, grey whales, walruses, narwhals and bowhead whales when available.
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They spend most of their lives in the water, but come ashore to mate, give birth, molt or escape from predators, such as sharks and orcas. Phocids are known to have existed for at least 15million years, [14] and molecular evidence supports a divergence of the Monachinae and Phocinae lineages 22mya. The Japanese sea lion and the Caribbean monk seal have become extinct in the past century, while the Mediterranean monk seal and Hawaiian monk seal are ranked endangered by the International Union for Conservation of Nature.
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