RESEARCH: The bulging eyes of a stingray make it swim fast

The more streamlined an animal, the faster it is. To be streamlined means that the shape of the animal has smooth, flowing lines that enable it to reduce resistance to movement (called drag), such as through water or air. 

Research scientists have found that the bulging eyes and mouth of a stingray makes it a faster swimmer. This seems impossible, because any part of a body that is protruding (sticking out) usually makes an animal slower.

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