Dolphins are mammals in the order Cetacea. They are part of the toothed whales. Generally, they are among the smaller whales. Most live in salt water oceans, but some live in rivers - there are oceanic dolphins and river dolphins. Dolphins are from 1.5 to 4 metres (~5 ft to 13 ft) long. The Killer whale is the largest of the group, and can be about 8 metres (26 ft). The name 'dolphin' comes from the Ancient Greek δελφίς (delphis) meaning "with a womb", because it was first thought to be a fish with a womb. It is now known to be a mammal, and quite an intelligent mammal. Dolphins breathe air. A dolphin's nose is on top of its head so the dolphin can easily breathe on the surface of the water. The skin of a dolphin has no scales. It is soft and smooth. However, it is very firm, due to how much muscle they have. Dolphins useecholocation to find their food.
1 3 1
Dolphin is one of the smart animals in the world...
Dolphin can make you laugh because of it*s playing...
In short you will be happy if you can see the dolphin actractions