Echolocation does. The dolphins make a series of noises (including clicking and whistles) and it bounces back. They communicate to each other that way too.
Dolphins and whales.
dolphins can not stay in water long time like most aquatic animals
Well, I only know one, but Dolphins are being trained to locate mines in the water for the U.S. marines, navy, and seals
they die because they are sea animals
Dolphins work together to find food, often "herding" school of small fish up onto reefs and sandbars. The dolphins then work together, taking turns to feed while the other dolphins keep the fish herded.Dolphins have well developed echolocation, by which they locate other animals and objects in the water. It is also how they communicate with each other.Dolphins have between 45 and 63 small, sharp teeth, which enable them to tear food into smaller pieces.
Fish, Dolphins, etc. and other mammals
Dolphins use echolocation to "see" around them when the water is murky. They can use it when they can't see with their eyes and also use it to locate fish and prey.
A dolphin's blowhole helps it breath while it is in the water.
There are fish,dolphins,sharks and many more salt water animals
Dolphins use echolocation to "see" around them when the water is murky. They can use it when they can't see with their eyes and also use it to locate fish and prey.
Yes dolphins were four legged animals, they evolved into what they are now. At first they were wolf-like creatures but they adapted to water. It's the same way with whales.
Well, that's not so much a difficult question. All sea animals depend on water for breeding such as: Whales, sharks, angel fish, dolphins, crabs, lobsters, etc. Some animals such as turtles or frogs or some other amphibians do depend on water for breeding their animals.