Sharks are not blind, even though many people thought they were, or that they had very poor eyesight. … Sharks are color blind, but they can still see quite well.

Do sharks have poor eyesight?

Sharks are thought to be able to see very focused images. The fact that shark vision is monochromatic does not mean they lack visual acuity. In both cases, the effect is the same and the retina receives a focused image. Sharks have great visual acuity and they absolutely rely on that vision for many of their behaviors.

Do sharks have vision?

Studies have shown that sharks can see about 10x greater than humans, even in clear water. While sharks rely on many other highly tuned senses to maneuver the vast oceans they call home, they still rely on their impressive eyesight to find and catch their food.

A shark’s sense of smell is powerful – it allows them to find prey from hundreds of yards away. Menstrual blood in the water could be detected by a shark, just like any urine or other bodily fluids. However, there is no positive evidence that menstruation is a factor in shark attacks.