dolphins coloring pages
dolphins coloring pages
Dolphins are mammals of the order Cetacea, the Whales. They are animals that usually live in salt water, like the sea, but certain species can live in rivers.
The name “dolphin” is used for oceanic dolphins and river dolphins. But oceanic dolphins and river dolphins are not directly related.
Their 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 very different from fish, because it breathes air and has warm blood, like all other mammals. They are believed to be almost as smart as a human. Because they are so smart, they have been used by the navy for jobs under the sea.
The brain of a dolphin is like a human brain in size and development. Dolphins have good eyesight. They can watch a thing in the water, and they can see colors, too. They can also see in dark places. 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. A dolphin’s hearing is better than their sight. There are some small holes behind the eyes, and they are the ears of a dolphin. Dolphins can hear a sound underwater. They can know the direction of the sound very well. 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 use echolocation to find their food.
Dolphins do not sleep in a normal way. They have two sides of their brain, which they use to sleep. One side sleeps, while the other side stays awake. They will keep one eye open to watch for predators while they sleep.
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