Why can fish breathe under water?
they have gills
People aren't fish, and can't breathe under water. Our lungs can't extract (enough) oxygen to sustain life from water. We'd drown. When people do breathe under water, they do so with the help of equipment that basically let them take a bit of the atmosphere with them, allowing the lungs to work just like they were still above the surface.
Most organisms, except for some such as anaerobic bacteria, respire oxygen. Fish have gills, gills have the ability to take the oxygen out of the molecule H2O. Fish have gills, which filter out the oxygen from the water. However, they can't breath out of water. A fish doesn't have lungs, it has gills, so it doesn't breathe in water really. Fish breathe under water by using their GILLS to survive Gills pull oxygen from the…
Although there are fish called dolphins, the dolphins more commonly referred to are cetaceans (a kind of ocean dwelling mammal), that are related to porpoises and whales. Neither kind of dolphin is an amphibian. While amphibians breathe under water or on land, fish breathe best under water while mammals breathe the air.
fish breathe faster in warm water than cold water is because fish are cold blooded. if the temperature of the water is colder then the heart rate of the fish falls. if the fish is in warm water, than the heart rate of the fish will go up, causing the fish to breathe faster. There is more oxygen in cold water. Thus, fish have to breathe faster in warm water to get more oxygen.
no, the aquatic mammals must come up for air even though they live in the water. Only fish can breathe the oxygen in the water, because they use their gills which filter out the oxygen from the water. The oxygen is stored in their bodies, and the water is pushed back out of the gills so the fish does not drown. If a fish were to have their gills cut then they would no longer…
Animals that are born under water are animals who most likely can breathe in the water. For instance, tadpoles ( frogs) start off born in the water and then grow until they can go in and out of the water. Examples of animals born under water: Fish Frogs Whales Sharks A fish is born under water by marwa