A fish! Fish are the only animals with gills and most live in water.
Fish
Fish use gills to breathe underwater.
Oysters have gills. They absorb oxygen from the water.
They use their gills to take oxygen out of the water.
Fish have gills, that's what helps them breath underwater.
Fish breathe through their gills. There are usually gills on either side of the pharynx. Gills have thread-like structures (filaments). These filaments exchange the oxygen and carbon dioxide.
They use their gills. However, oxygen is still crucial.
All fish breathe through their gills. Some have additional organs to assist but all fish use their gills to obtain oxygen from the water they live in.
Shellfish have gills just like fish do. They suck water into their shell and pass it over their gills, then squirt it back out again. Sometimes, you can see clams squirting water out of their shells when you are digging them up out of the sand.
Fish do not breathe through their mouth like humans. They have gills which the use to filter the oxygen from the water.
Oxygen rich water is pumped through the fish's mouth and across their gills, where oxygen is absobed and carbon dioxide excreted. The gills push the deoxygenated water out through the pharynx. So basicly they use there gills
No they do not. That's why they come up every once in a while. Mammals are animals that MUST breathe air to survive. All otters areammals
They are little fish. Tadpoles live in water, and they require oxygen to survive, therefore they have gills. The gills allow the tadpoles to breathe.