Take a dolphin download a mega-cool hippie app and get cool pictures on the screen of your device! Share information about the app with a friend so he also was at the heart of the latest news. Dolphins - a common name for cetacean mammals from the family of dolphin and river dolphins. About forty species of dolphins are known in 17 genera. They range in sizes from 1.2 m and 40 kg (dolphin Maui) to 9.5 m and 10 tons (whalebone). Meet around the world, mostly in the shallow seas of the continental shelf. Predators eating mainly fish and squid. The family of dolphins, the largest in a series of cetaceans, was separated from the rest of the whale relatively recently, about ten million years ago during the Miocene. If you believe in literary sources, the first man who made friends with the dolphin, was Telemachus - the son of Odyssey. Ancient Greek poet Oppian, in a poem about fishing for "Aliyevtika" (180 AD), wrote: "There was nothing else created in the world more beautiful than a dolphin."