Dolphins

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Dolphins

Dolphins are marine mammals closely related to whales and porpoises. There are almost forty species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) , up to 9.5 m (30 ft) and 10 tonnes . They are found worldwide, mostly in the shallower seas of the continental shelves and are carnivores, eating mostly fish and squid. The family Delphinidae, the largest in the Cetacean order, evolved relatively recently, about ten million years ago during the Miocene. The name is originally from Greek δελφίς ,dolphin", which was related to the Greek δελφύς , "womb". The animal's name can therefore be interpreted as meaning "a 'fish' with a womb". 

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