Answer:
These full bathing suits are no ordinary one's, they serve a very important purpose in competitive swimming. These suits reduce friction and drag in the water, increasing the efficiency of the swimmer's forward motion. The tight fits allow for easy movement and are said to reduce muscle vibration, thus reducing drag. These suits are based on the skin of sea based animals, sharks in particular whose skin is made of scales spaced very closely together called dermal denticles. It is the grooves in between the scales that produce drag resistant skin. The ridges allow water to pass around the shark more efficiently. On the other hand the human skin is inadequate at slicing the water because of its porous design.
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