Diving depths and energy requirements of king penguins

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Science  20 Aug 1982:
Vol. 217, Issue 4561, pp. 726-727
DOI: 10.1126/science.7100916


During 4- to 8-day periods at sea, half of 2595 dives of three king penguins were more than 50 meters and two dives exceeded 240 meters. The at-sea metabolic rate, estimated from the turnover of tritiated water, was 2.8 times the standard metabolic rate and requires about 2.5 kilograms of squid per day. Ten percent or less of the dives may result in prey capture.