2006-11-28 17:32:27 · 10 answers · asked by Student 2 in Science & Mathematics ➔ Biology
They hold their breath. They can hold their breath for a very long time because they have a very efficient metabolic rate that allows them to control the amount of oxygen required by their bodies. Their heart rate drops and blood supply to external parts that do not require so much oxygen are reduced.
2006-11-28 17:35:05 · answer #1 · answered by Dewdrop 3 · 0⤊ 0⤋
They don't. Aquatic mammals come to the surface to breathe air, but have developed the ability to remain underwater between breaths for a seemingly (to humans at least) long time.
2006-11-28 17:36:37 · answer #2 · answered by EE dude 5 · 0⤊ 0⤋
Mammals are warm blooded animals that feed their young on milk. Mammals have adapted to a fantastic range of habitats. Look at the Desert Moles, who live their life in the desert. Look at Polar Bears who freeze their butts off on the ice floes. Look at the otters, both Sea and Fresh water. Look at pigs, mmmmm, Bacon. Look at porpoises, dolphins, manatee, whales, dugong, walrus and seal. The last seven all live in water. One thing a mammal needs is to breath oxygen. All mammals have internal lungs that require respiration.
Respiration exchanges the oxygen burned by the body, using carbohydrates, to produce carbon dioxide. Lungs and water do not mix as water is not the best medium for exchanging gases. Usually leads to drowning when a lung is full of water.
Man has a nose to breathe through as do all other mammals. The whale and porpoise has a blowhole locate roughly on the top of their heads. They have to breach or break the surface to breathe. Others, like the seals, just stick their noses out of the water and take a breath.
2006-11-28 21:18:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
How Do Mammals Breathe
2016-10-02 00:08:07 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Aquatic mamals don't breath underwater, they go to the surface and hold their breath as they submerge.
2006-11-28 18:14:50 · answer #5 · answered by chick getting a biology major 1 · 0⤊ 0⤋
Some mammals can hold there breath for hours but fish shark and tadpole breathe to their gills a shark cannot stay in one place it have to keep moving to breathe.
2006-11-28 17:44:47 · answer #6 · answered by Anonymous · 0⤊ 2⤋
Mammals hold their breath.
2006-11-28 17:34:51 · answer #7 · answered by Anonymous · 0⤊ 0⤋
They don't they have to come up for air. Although they can sometimes hold their breath for many hours.
2006-11-28 17:35:17 · answer #8 · answered by Anonymous · 0⤊ 0⤋
They brease using their gills and some animals like shark and others brease out side once and stay alot in the water
2006-11-28 17:36:41 · answer #9 · answered by Marshal 1 · 0⤊ 2⤋
by gills of corse
2006-11-28 17:54:40 · answer #10 · answered by Me 2 · 0⤊ 3⤋