The sound is produced in nasal passages. Sound travels at 1115 ft. per second. The sounds sent out are generally high frequency, over 200,000 cycles per second. They need echolocation in murky waters, because they cannot see very well. Activity Dolphins do a lot of active things, such as dancing, singing, playing or fighting.
Dolphins are very skillful in the water and often play around ships.
Dolphins travel hundreds of miles, hunting the fish that they eat. Deep-sea dolphins and spotted dolphins will swim into shallow water to eat. They can keep a speed of 23 miles per hour and leap 3 meters out of the water. The most widely held reason that dolphins jump out of the water is so they can see a flock of birds that are eating, and they can go to the food. When dolphins eat, they take turns, like they are sharing.