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753 Featured Specimen
Gray seal

Details

Gray seal

Halichoerus grypus

Size
1.8–2.6 m · 100–300 kg
Diet
Carnivore
Activity
Cathemeral
Sociality
Colony
Lifespan

A large seal of cold North Atlantic coasts. It has a long muzzle, spotted gray or brown coat, and breeds on remote beaches and rocky shores.

Range

Habitat range map
Native range Occasional / Transient
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Map: Ecoregions 2017 © RESOLVE (CC BY 4.0) · Natural Earth (PD)

Details

Habitat

Gray seals use North Atlantic coasts, islands, reefs, sandbanks, and continental shelf waters. Quiet haul-out and breeding sites are important.

Appearance

Adults are gray to brown with dark or pale spotting. Males are larger than females and have a longer, more convex muzzle.

Behavior

They forage alone or in small groups at sea and gather at colonies during breeding. Dives often target fish near the seabed.

Feeding

Diet includes fish, squid, octopus, and crustaceans. Local prey can include bottom-dwelling and schooling fishes.

Reproduction

Females come ashore in autumn or winter and give birth to a single white-coated pup. Nursing is brief and pups build fat rapidly.

Notes

Some populations have increased under protection, while fishery interactions, bycatch, and marine pollution remain management concerns.