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 ...
Aug 5, 2009 ... (By the way, this is why we couldn't breathe liquid unaided, as in the film The ...
Well, their gills are much more efficient at extracting oxygen than our lungs. ...
With an unlimited, easy supply of oxygen, whales and dolphins can ...
Feb 2, 1998 ... Marine mammals such as whales and dolphins spend their entire ... Marine
mammals can take in more air with each breath, as their lungs are ...
Fish are among the few vertebrates that can breathe underwater. Like humans,
fish ... The tarpon supplements its gill-breathing by using its gas bladder like a
lung. A tarpon will ... Whales and other ocean mammals lack gills. Instead, they ...
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 ...
such as sharks (or indeed fish in general) evolved to do this instead? ... could
survive in an aquatic environment with lungs and few mutations.
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.
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.