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    Seal, Harbor

    • Animals
    • Animals
    • Seal, Harbor

    Energetic swimmers of the northern seas, harbor seals propel themselves with strong back flippers, and are able to stay underwater for a long time. They beach themselves on sandbars to rest in the warm sun.

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      Seal, Harbor
      Phoca vitulina, Mammalia Pinnipedia

      Harbor seals have short, round heads with a V-shaped arrangement of the nostrils. The background color is generally brownish or gray, marked with small spots. All flippers are furred on both sides. Adult males are 59 to 79 ins. long and weigh 154 to 374 lbs. Females are somewhat smaller at 47 to 49 ins. long and 110 to 330 lbs. in weight. They have ear openings, which they can close, but lack external ears.

      This species is usually solitary, the only social cohesion being between the mother and her nursing pup. Adults and juveniles form strong linear hierarchies based on size and sex, adult males being dominant. Many individuals may gather at a favorite "hauling out" site for sleeping, birthing and resting.

      Harbor seals are strong swimmers using black flippers in a side to side motion and can leap completely out of the water or stay submerged 20 to 43 minutes. Metabolism slows to allow this. They are non-migratory and make only limited movements in connection with foraging and breeding. Enemies include sharks, killer whales, bears, walruses and, in the case of the young, eagles.

      Single pups are usually 30-39 ins. long and weigh 22 to 26 lbs. The pup has adult pelage and can swim at birth.

      • Wilderness Trek
      • RangeCoasts of the North Atlantic and North Pacific Oceans to Baja California and several inland lakes near Hudson Bay
      • HabitatRiverbanks, beaches, offshore reefs, rocky points
      • Wild DietMature: Fish, squid, octopus; shrimp, crab and crustaceans
      • Zoo DietFish (smelt, mackerel, capelin), vitamins

      Conservation

      StatusLeast Concern

      The Zoo is tackling today's most complex and pressing human-wildlife conservation issues with conservation partnersĀ in more than a dozen countries around the world.

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      Did you know?

      Harbor seals are the most common seal seen along the Eastern coast of the United States.

      • Behavior

        This species is usually solitary, the only social cohesion being between the mother and her nursing pup. Adults and juveniles form strong linear hierarchies based on size and sex, adult males being dominant. Many individuals may gather at a favorite "hauling out" site for sleeping, birthing and resting. Harbor seals are strong swimmers using black flippers in a side to side motion and can leap completely out of the water or stay submerged 20-43 minutes. Metabolism slows to allow this. They are non-migratory and make only limited movements in connection with foraging and breeding. Enemies include sharks, killer whales, bears, walruses and, in the case of the young, eagles.

      • Reproduction

        Delayed implantation allows seals to give birth and mate at the same time each year, despite a 9 month gestation period. Births vary by range, i.e., February for Baja, CA, and June to July for the North Pacific, Arctic North Atlantic and Europe. Single pups are usually 30-39 ins. long and weigh 22-26 lbs. The pup has adult pelage and can swim at birth. The mother is solicitous and will take the pup in her mouth and dive if there is danger. Lactation lasts 3-6 weeks, after which the pup is abandoned. Sexual maturity for males is reached between the ages of 3-6 yrs. and for females between 2-5 yrs.

      • Gestation10.5-11 mos.
      • Litter1-2

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