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Whales(9/14) (Characteristics of Whales. (Whales are mammals. They have…
Whales(9/14)
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Types of Whales
There are about 75 kinds of Whales. Most whales fall into one of two groups. One group has teeth. They called toothed whales. The other group does not have teeth. They called baleen whales.
Toothed whales, which include dolphins and porpoises, have jaws lined with sharp teeth. they eat fish, squid, and other sea life. Larger toothed whales even eat seals. The killer whale, or orca, is a well-known toothed whale.
Baleen whales have a special material, called baleen, that hangs from there upper jaw. It filters small fish and very small sea life from the ocean. It seems strange that such large creatures creatures eat such tiny food.
Ballen whales feed in different ways. Some feed by moving slowly through water. They swim with their mouths open. The trapped food is then swallowed.Other baleen whales swallow huge gulps of water. A single gulp could fill a couple of swimming pools.
Introduction
Whales are very large. In fact, they are the largest animals on Earth. And they are probably the largest animal that ever lived on Earth.
A large blue whale can be over 33 meters(100 ft) long. It can weigh nearly as much as 20school buses. Its heart is as big as a small car.
Some whales are fairly small. These smaller whales are 1.2 to 1.8 meters (4 to 6 ft) long. Dolphins are an example of a smaller whale.
Where Whales Live
Most whales live in salt water. But a few live in freshwater rivers. Since water makes things buoyant, it helps support the weoght of large whales.
You can find saltwater whales in most of the world's oceans. The range from the North Pole to the South Pole. Some whales migrate great distances.
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