Answer: cetacean

AnswerCrossword Clue
CETACEANWhale or dolphin
CETACEANPorpoise, perhaps.
CETACEANWhale.
CETACEANWhale or dolphin.
CETACEANDolphin, e.g.
CETACEANAir-breathing swimmer
cetaceancetacean mammal
cetaceanbelonging to the Cetacea, an order of aquatic, chiefly marine mammals, including the whales and dolphins