Penguins are animals that live mainly in the southern hemisphere, and many penguins live in the Antarctic region. In terms of category, penguins belong to a kind of birds. However, they are different from most birds, because they can not fly, but have the ability to swim. In fact, penguins have a very long history of existence, and they are very old swimming birds. Because they can swim, they also have the nickname "boat of the sea". The penguin's ability to swim is very important, if they can't swim, they can't go down to the ocean, they have no food to eat. They eat small fish, squid and so on, all living in the ocean.
The above has been introduced, although penguins are birds, but they can swim. This is because their special body structure allows them to move more freely in the water. The forelimbs of penguins are like the fins of fish, which is the result of long-term evolution, because many penguins live in the Antarctic region, and there is not enough food on land, only to hunt in the water, which makes penguins have to evolve to adapt to the body structure of the aquatic environment in order to survive. When penguins are in the water, their forelimbs can play an important role. In fact, their ability to swim in the water is very strong and fast.
