Beacuse on land they could easlily be hurt and their only way to get around is to float. it would not be albe to walk or float on the ground, would it? It was just adapted to the water.
There are various animals that are without a skeleton are usually small and live in water, like the squid. They are usually small and live in water because there is no backbone to support a large structure.
Fish, Dolphins, etc. and other mammals
Floating plants protect small water animals by floating near the surface of the water and preventing birds from eating or harming the animals underneath.
I don't believe there is any animal that can live without water...but some animals, for instance, the camel, can store water, or can last without water for a long period of time.
No animals can live without water. Some animals can go long periods of time with out water like camels but no animal can go their whole life without drinking any water at all.
flesh
so animals can live. without water animals can't live. Animals live in biomolecules
quite a few actually. There are several desert dwelling animals, moslty reptiles and small rodents that can get by solely on the moisture in their diets
Because life needs water. Without water there is no life.
Yes. No animal can live without water. Although Camels can last a while without it.
Because animals are just like humans. They can only go without water for a few days, then if they don't get water soon they will dehydrate.
There are no plants nor animals that can survive without water.