harbor seal


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harbor seal,

most commonly seen sealseal,
carnivorous aquatic mammal with front and hind feet modified as flippers, or fin-feet. The name seal is sometimes applied broadly to any of the fin-footed mammals, or pinnipeds, including the walrus, the eared seals (sea lion and fur seal), and the true seals, also called
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 of the Northern Hemisphere, Phoca vitulina. Harbor seals are found along coasts and in sheltered bays and harbors of North America, Europe, and NE Asia. They range farther south than any other northern seal, being found in North America as far S as New Jersey and S California. They range north to the southernmost limits of the ice cap. Also known as common seals, hair seals, and leopard seals, they enter rivers, and are even found in the Great Lakes. Small seals, they reach a length of up to 6 ft (180 cm) and a weight of up to 250 lb (110 kg). Their coats are gray with white spots or yellowish with gray or black blotches. Harbor seals are solitary hunters; they feed on fish, mollusks, and crustaceans, coming ashore to rest and sleep. They may gather in large numbers on rocks or beaches, especially at the mating season. They are polygamous and the female produces a single pup in early spring. Small colonies of several families each occupy particular locations in the water, usually near rocky shores or islands, and may remain there for many generations. Their greatest enemies are sharks and killer whales. Harbor seals are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Carnivora, suborder Pinnipedia, family Phocidae.
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References in periodicals archive ?
We report natural BATV infection of 2 captive harbor seals (Phoca vitulina) in Germany, in which meningoencephalomyelitis developed in 1 of them.
As with other harbor seal studies in glacial fjords in southeastern Alaska, we found peak pup counts in late June (Mathews and Pendleton, 2006, Jansen et al., 2015).
Currently just over 50 pounds, harbor seal 'Pup 2014' is expected to grow swiftly to about 200 pounds in adulthood.
Harbor seal haulout sites have been found in the Beardslee Islands in our study area (Mathews and Pendleton, 2006; Womble et al., 2010), and observations from our ground surveys confirmed that harbor seals were present in 2010-11.
Harbor seals, along with their relatives sea lions and walruses, belong to a group called pinnipeds, which means fin-footed.
Given our concern that body weight (~ age) of the harbor seal pups might influence either contaminant concentrations or thyroid end points, we conducted regressions between body weight and contaminant concentrations, TH concentrations, and TR levels.
west coast pinnipeds are the California sea lion, Steller sea lion, harbor seal, northern elephant seal, northern fur seal, and Guadalupe fur seal.
The forelimbs of three harbor seals (Phoca vitulina) were taken at a necropsy session held at the National Marine Fisheries Service in Woods Hole, MA.
Heavy metals in the Northern Fur Seal, Callorhinus ursinus, and Harbor Seal, Phoca vitulina richardi.
The harbor seal (Phoca vitulina) is the most abundant pinniped species in the protected coastal waters of Washington State and British Columbia, Canada (Jeffries et al., 2003).