When they need air or just to play sometimes. If it is in an aquarium, they are trained to a whistle and hand commands (movements).
Dolphin's breathe in air, but they can hold their breath for long periods of time. When they come up to the surface or jump out of the water, they are coming up for air.
dolphins cannot stay underwater forever, so they will rise to the surface from time to time. sometimes they will leap out of the water to get air instead.
dolphins leap out of water because they are also mammals and they also need to breath air such as us. So they jump to catch a breath of air
not all of them, some, most. It depends how they are feeling and where they are. (I'm not an expert just to let you know)
Spinner dolphins are aptly named for their above-water actions. They can leap into the air and make as many as seven complete spins before diving back into the ocean again. In Hawaii, the spotted dolphins can leap higher (we've had them jump high enough to be at eye level to us in a vessel's tuna tower!) than a spinner, but except for the Clymene dolphin, no other dolphins spin
Like many other dolphins Bottlenose use their flukes (tails) and flippers to create vibrations along the sand/mud along the ocean floor and to move it around. Other fish think that a predator is coming and leap out of the water straight into the incoming dolphins mouth
Pink dolphins need water because they are dolphins.
Dolphins live in the sea water, but do not drink it. The ocean water is too salty for the dolphins system to handle.
There are slightly over 30 species of dolphins in the world. Including fresh water dolphins and salt water dolphins.
They do not seem as active as they normally are and they have a poor appetite.
Dolphins sleep near the surface. They sleep in the water.
Dolphins communicate under water by using echolocation
Ok for one thing dolphins don't have to be in water! dolphins are mammal.So is the killer whale
Whales and dolphins can't communicate under water
River dolphin's
NO, they play with other dolphins.