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 ...
So they evolved in a way that let them live in the ocean, with wide tail flukes, ... A
whale's lungs work like ours do, but they make the most of each breath. In one ...
Even when they are on land, the gills can still absorb oxygen as long as they are
... For the crabs that do not have lungs, if the gills are kept moist, they can breathe
just as ... Betta fish can breathe oxygen both from the water through their gills and
... Other sea animals, such as whales, breathe oxygen from the air because .....
Gills can only introduce a small amount of oxygen per liter of water, while lungs
can ... so organisms with lungs only need to process about 4 grams of air per
breath. ... Whales and dolphins are mammals that live in water, and they have
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 ... ... to do so? If there is some advantage to breathing from the air instead of using
gills, why haven't animals such as sharks (or indeed fish in general) evolved to
do this instead? ... There are advantages to lungs in whales.
Dolphins are cetaceans, members of the same family as whales. ... Instead,
dolphins breathe through nostrils located on top of their heads, called blowholes.
When the dolphin surfaces, he can blow the old air out of his lungs, creating a
plume of spray and suck in fresh air. ... Does a Crocodile Have Gills or Lungs?