Biology
(
英語
)
由World Register of Marine Species提供
Grey seals breed during winter. They are less shy and more curious than the harbour seal. Young, grey seals must stay out of water until they have gained weight and moulted and for this reason they remain in a raised location for the first few weeks of their life. Grey seals feed mainly on mackerel, young cod and other round fish, but also on cephalopods and crustaceans, in contrast to harbour seals which eat more flatfish.
Stienen, E.W.M.; Van Waeyenberge, J.; Kuijken, E. (2003). Zeezoogdieren in Belgisch mariene wateren [Marine mammals in Belgian marine waters]. Rapport Instituut voor Natuurbehoud, A.2003.152. Instituut voor Natuurbehoud: Brussel, Belgium. 15 pp.
Diet
(
英語
)
由World Register of Marine Species提供
Fish, crustaceans, squid
North-West Atlantic Ocean species (NWARMS)
Distribution
(
英語
)
由World Register of Marine Species提供
cold temperate to subarctic North Atlantic
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).
Distribution
(
英語
)
由World Register of Marine Species提供
North America
North-West Atlantic Ocean species (NWARMS)
Morphology
(
英語
)
由World Register of Marine Species提供
Distinguishing characteristics: medium size seal, long head ("horsehead"), W-shaped nostrils, coat is mottled, female has light coat with dark spots, male has dark coart with light spots (when wet looks grey or dark).
North-West Atlantic Ocean species (NWARMS)
Morphology
(
英語
)
由World Register of Marine Species提供
Grey seal males attain 1.7 m in length and a weight of 120 kilos, whereas females are smaller reaching just 1.5 m and 90 kilos. Sexual dimorphism here is more pronounced than in any other seal species. The male is darker possessing light spots and an elongated snout. In contrast, females are lighter with darker spots.
Stienen, E.W.M.; Van Waeyenberge, J.; Kuijken, E. (2003). Zeezoogdieren in Belgisch mariene wateren [Marine mammals in Belgian marine waters]. Rapport Instituut voor Natuurbehoud, A.2003.152. Instituut voor Natuurbehoud: Brussel, Belgium. 15 pp.
