than the lower Dolphins not have called land, and feed small dolphins milk give birth like many animals on the not lay eggs to have children They Dolphins are sea animals They upper part of their bodies is darker fins Their colour is usually gray The backs They have a tail with small two on their sides and one on their As a fish, dolphins have three fins, First, people dolphins and it died out This is called an echolocation the sea Baiji is a kind of They can know how far the object is fishing nets that people put in forward and wait for them to return till the age of seventeen dolphins in their way Dolphins send out waves get stuck in the Sometimes But most dolphins live fish they food (fish) and if there is something seas They can live for fifty years eat people kill dolphins because throw dirt in water and pollute behind this use a unique system to know where is to and smaller People are reason Dolphins can live in rivers as well as travelling river it Secondly, in some countries, and of Dolphins are clever animals They dolphins Numbers nowadays are in a dolphins are becoming smaller danger Dolphins different places small other looking for food, looking after their families, dolphins help each Those groups are like families In groups of dolphins living together are That fur or hair to keep them warm, but they mammals They also breathe normal they have a thick layer of fat under why air They come up to take in some air their skin is and go down again They can stay under the water for fifteen minutes Dolphins live in schools They are Original Text by: Snjezana Veljaca Modified by: Fatma N Abdullah fin pollute: make it dirty - kind unique: special, it is one of a - and feed them milk Animals give birth to babies Mammals: