Starfish are echinoderms that live in the ocean. They often lie quietly at the bottom of the ocean, sometimes observing them for a long time without moving. When they lie down, they seem to have no feet. They will have five wrists, but these five wrists can not be counted as their feet. If we turn them over, we will find many things like pipes, which can be counted as their feet. However, these feet are not what we usually call animal feet, and the difference between them is quite big. But considering that they use these structures for their activities, it can also be said that starfish have feet.
As mentioned above, starfish can't see their feet when they lie on the bottom of the water, but if they are turned over, they can see many dense tube-like things. If the structures that creatures use to move are defined as feet, these structures can be called feet, which are called "tubular feet". They are distributed under the five arms of the starfish, so they can only be observed when they are turned over. The number of these tubular feet is very large, and the number of tubular feet varies from starfish to starfish. For example, some of the larger starfish have thousands of tubular feet.
It is with these structures that starfish can move, and these tubular feet can wriggle and drive starfish to move. However, although starfish can move, their speed of movement is very slow, because the tubular foot structure can not support their rapid movement.
