The major prey of sperm whales is cephalopods (octopuses, squid), though other invertebrates and fish have been found in stomach contents. Primary prey species include squids of the genera Architeuthis (giant squid), Moroteuthis, Gonatopsis, Histioteuthis and Galiteuthis (Jefferson et al, 2008). Sperm whales are exceptionally deep and long divers. Dives of over 2000 metres lasting more than one hour have been recorded, though stomach contents recovered from one individual taken at 3193 metres contained the remains of a bottom-dwelling shark, suggesting deeper dives may be possible (Watkins et al, 1993).
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