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Among cetaceans sperm whales have the greatest difference in size between males and females. This is the tail end of a female sperm whale, Physeter macrocephalus, Hawaii.
No usage of this image, of any kind, is granted without the express written consent of David Fleetham.
© David Fleetham Underwater Photography
email@example.com 808-283-1154 Maui, Hawaii, USA.