Question

How does the shape of fish help them to swim

Answer 1

Fish swim by flexing their bodies and tail back. Fish stretch or expand their muscles on one side of their body, while relaxing the muscle on the other side. This motion moves them forward through the water. Fish use their back fin, called the caudal fin, to help push them through the water.

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Answer 2

Answer:

When a fish swims; its front part curves to one side and the tail part stays in the opposite direction. In the next move, the front part curves to the opposite side and the tail part also changes its position to another side. The tail fin helps in changing direction.

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