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grey seal
The grey seal (''Halichoerus grypus'', meaning "hooked-nosed sea pig") is found on both shores of the North Atlantic Ocean. It is a large seal of the family Phocidae or "true seals". It is the only species classified in the genus ''Halichoerus''. Its name is spelled gray seal in the US; it is also known as Atlantic seal and the horsehead seal.〔〔Mowat, Farley, Sea of Slaughter, Atlantic Monthly Press Publishing, First American Edition, 1984.〕
==Appearance==
It is a large seal, with bulls reaching long and weighing ; the cows are much smaller, typically long and in weight. Individuals from the western Atlantic are often much larger, males reaching and females weighing up to .〔(Gray Seal (marine mammals) ) . what-when-how.com〕 It is distinguished from the harbor seal by its straight head profile, nostrils set well apart, and fewer spots on its body. Bull Greys have larger noses and a less curved profile than common seal bulls. Males are generally darker than females, with lighter patches and often scarring around the neck. Females are silver grey to brown with dark patches.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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