TOP 5

Which mam­mal can dive for the long­est time?

Science Illustrated - - ASK US -

1

CUVIER'S BEAKED WHALE 2 hours and 18 min­utes Apart from hold­ing its breath, the whale can dive to a record depth of 2,992 m.

2

ELE­PHANT SEAL 2 hours Car­bon monox­ide in its blood may help an ele­phant seal dive deep to catch rays.

3

SPERM WHALE 90 min­utes A flex­i­ble chest en­sures that the lungs can col­lapse to en­able ex­tremely deep dives.

4

WEDDELL SEAL 70 min­utes Myo­globin in the seal's mus­cles stores oxy­gen, which the seal "eats" un­der the ice.

5

SLOTH 40 min­utes Very slow me­tab­o­lism low­ers the crea­ture's pulse by 2/3, re­duc­ing oxy­gen con­sump­tion.

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