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• earless seal, true seal, hair seal
• 海豹, アザラシ
• any of several seals lacking external ear flaps and having a stiff hairlike coat with hind limbs reduced to swimming flippers
• 耳介が無く、遊泳用の足びれに変化した後肢と硬い毛のような外被を持つアザラシの総称