SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They have hair.
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They are warm blooded and give live birth.
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They can breathe underwater.
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They feed their babies milk.
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Detailed explanation-1: -Whales and dolphins are mammals and breathe air into their lungs, just like we do. They cannot breathe underwater like fish can as they do not have gills. They breathe through nostrils, called a blowhole, located right on top of their heads.
Detailed explanation-2: -Why can’t mammals breathe underwater? That’s because mammals don’t have gills. They have lungs. Not even marine mammals such as whales and dolphins can breathe underwater, hence why they have blowholes on top of their heads to keep water from getting into their lungs.
Detailed explanation-3: -The two aquatic animals which have no gills are dolphins and whales. These animals must come to the surface in order to breathe as they cannot breathe underwater without gills. Was this answer helpful?
Detailed explanation-4: -Many marine mammal species can stay underwater for a long time, but must come to the surface to breathe. To be able to stay underwater for long periods, they store extra oxygen in their muscles and blood.