Question

how do whales saty under water for so long
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Answer 1

Answer:

Whales have a very efficient respiratory system where their lungs can make the most out of each breath, giving them the ability to stay underwater for hours at a time. Whale's lungs have the ability to store oxygen in a special protein found in muscles called myoglobin.

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Answer 2

Answer:

They have a very efficient respiratory system where their lungs can make the most out of each breath, giving them the ability to stay underwater for hours at a time. ... Whales' lungs have the ability to store oxygen in a special protein found in muscles called myoglobin