Definition of elephant seal
: either of two very large seals (genus Mirounga of the family Phocidae) characterized by a long inflatable proboscis: a : one (M. angustirostris) found in Pacific coastal waters from southeastern Alaska to Baja California b : one (M. leonina) found in coastal waters of subantarctic islands and Patagonia
First Known Use of elephant seal
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Britannica.com: Encyclopedia article about elephant seal
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