Just as their name suggests, these creatures have got baleen plates in their mouths, which help in the filtration of food. Baleen plates are actually made up of a special protein known as keratin, which is also found in the human body. It helps in developing the hair and fingernails of human beings, but its purpose inside a whale’s body is entirely different.
The baleen plates inside the mouth of a whale are quite strong, but they are flexible at the same time. Once the whale catches prey from the sea water, these plates help in filtering that food before it goes down into the stomach.
Some species of whales have got hundreds of baleen plates inside their mouths. They are quite smooth on the outside, but have got a hairy fringe on the inner side. Moreover, these plates are almost a quarter inch apart from each other.
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The name of these whales clearly indicates that they have got teeth inside their mouths. The maximum number of teeth a whale can have inside its mouth is 100. However, this number can vary between species.
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