Sperm whale (Physeter macrocephalus). The lumps are the 'knuckles' on theback of the whale's tail. Photographed in the Gulf of California.

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Size: 5400px × 3616px
Photo credit: © CHRISTOPHER SWANN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, american, animal, aquatic, biological, biology, california, catodon, cetacean, cetology, coast, coastal, cortes, cortez, diving, fauna, gulf, knuckles, latin, macrocephalus, mammal, marine, nature, north, physeter, physeteridae, sea, sperm, tail, tailstock, water, whale, wildlife, zoological, zoology