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In page Harp seal:

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Harp seals can strand on Atlantic coasts, often in warmer months, due to dehydration and parasite load.[7] Harp seals often consume snow to stay hydrated, but in mild winters may not have enough available. Several centers are active in seal rescue and rehabilitation, including IFAW, NOAA, and the New England Aquarium. Harp seals are protected by the Marine Mammal Protection Act in the United States.