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Leatherback turtles possess remarkable adaptations for long and deep dives. They have large onboard stores of oxygen in their blood and muscle, and special features like collapsible lungs (to avoid ‘the bends’), a pulmonary sphincter (to shunt blood flow away from the collapsed lungs and back to the body during dives), flexible shell (to respond to increased pressure at depth), and slowed heart rate (to conserve energy and oxygen stores). In fact, researchers have recorded leatherbacks diving to over 1,000 meters in different ocean basins (Doyle et al. 2008). Apparently, anything a whale can do, a turtle can, too.
Read more >http://deepseanews.com/2009/04/deep-diving-adaptations-of-leatherback-turtles/
| 13 years ago. Rating: 5 | |
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