Young Sperm Whale (Physeter macrocephalus) spy-hopping (note the sloughing skin) in the mid-riff region of the Gulf of California (Sea of Cortez), Mexico.

sperm whale physeter macrocephalus cachalot cachalote odontocete toothed warm blooded mammal cetacea cetacean gulf of california sea cortez mexic cetaceans animal physeteridae odontoceti surfacing water ocean oceanic marine mexican northern hemisphere central america central one alone single solitary individual american tropic tropics tropical pacific shedding peeling juvenile offspring spy hopping spyhopping spyhop head