<P> Most sea turtles (those in family Cheloniidae) are poikilotherms . However the leatherback (family Dermochelyidae) are endotherms because they can maintain a body temperature 8 ° C (14 ° F) warmer than the ambient water . </P> <P> Green sea turtles in the relatively cooler Pacific are known to haul themselves out of the water on remote islands to bask in the sun . This behavior has only been observed in a few locations including the Galapagos, Hawaii, Europa Island, and parts of Australia . </P> <P> Sea turtles are air breathing reptiles that have lungs, so they regularly surface to breathe . Sea turtles spend a majority of their time underwater, so they must be able to hold their breath for long periods . Dive duration largely depends on activity . A foraging turtle may typically spend 5--40 min under water while a sleeping sea turtle can remain under water for 4--7 hours . Remarkably, sea turtle respiration remains aerobic for the vast majority of voluntary dive time . When a sea turtle is forcibly submerged (e.g. entangled in a trawl net) its diving endurance is substantially reduced, so it is more susceptible to drowning . </P> <P> When surfacing to breathe, a sea turtle can quickly refill its lungs with a single explosive exhalation and rapid inhalation . Their large lungs permit rapid exchange of oxygen and avoid trapping gases during deep dives . </P>

How long can sea turtle hold their breath
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