Dolphins can be found in most of the world?ÇÖs oceans. They are noisy animals and have many sounds that they use to communicate. Dolphins can leap as high at 20 ft out of the water. Since they are mammals, dolphins have to come to the water?ÇÖs surface to breathe. They have blowholes on the top of their heads that allow them to do so. They feed mostly on fish and squid.