Aquatic respiration is the process whereby an aquatic animal obtains oxygen
from water. ... Fish use the process known as countercurrent flow, in which water
and blood ... The respiratory system of ...
Apr 19, 2009 ... Fish use their gills to take oxygen from the water that they live in. But people get
the oxygen we need by breathing air, using our lungs. Whales ...
In order to inhale and exhale air whales breathe through their blowhole(s) which
are ... Although cetaceans do not have gills or lungs capable of breathing under ...
No, whales don't have gills; instead they are born with blowholes. ... to extract
oxygen directly from the water so that they can breathe underneath the water ...
Whales are marine mammals and like all mammals they have lungs and nostrils,
Like other mammals, dolphins have lungs and breathe air. They breathe using a
blowhole on top of their head and will normally do this several times a minute.
Why do dolphins and whales swim to the surface of the ocean? ... The air-
breathing lungs of mammals, including humans, must be dry and empty of ... As
water passes over the thin walls of the gills, dissolved oxygen moves into the ...
With more than 25,000 species of fish in the sea to inspire your design, anything
Feb 23, 2015 ... If there is some advantage to breathing from the air instead of using gills, why ....
Why Lungs can't work in water and gills can't work in air?
Young whales and dolphins actually rest, eat and sleep while their mother swims,
... Marine mammals can take in more air with each breath, as their lungs are ...
Whales can't breathe in water for the same reason we can't. ... breathe. Animals
with backbones lost their gills and developed lungs when they moved onto land.
A whale can hold it's breath for up to half an hour under water and that's because
its ... to ours, but when it breathes in fresh air most of its lungs are filled with air.