Sharks are not capable of distinguishing color

According to the latest research published in the German journal Naturwissenschaften, scientists found that sharks are unable to distinguish between colors.

In their experiments, Australian scientists used a technique called micro-spectroscopy to study retinal cells of 17 species of sharks captured off Queensland and Western Australia.

Of all these 17 species, the most common form of light receptors are "rod " cells, which are very sensitive to light and allow night vision, but are unable to distinguish colors.

The study also found that sharks often lack cones, which are very sensitive to glare and can recognize colors . In humans, cone cells help us to distinguish colors from each other.

Dr. Nathan Scott Hart of the University of Western Australia, director of the study, said that, in 10 of the 17 shark species studied, scientists did not detect a single cone. In the remaining seven species, scientists discovered cones but they were single, very sensitive, with a wavelength of about 530nm blue.

This retina system shows that sharks can distinguish between gray shades, but are almost incapable of distinguishing other colors.

Dr Hart said that the study could help prevent shark attacks on humans and develop gears to reduce random catches of sharks.

Previously, scientists at Germany's Max Placnk Neurological Research Institute also discovered that, living in the deep blue ocean waters, whales and dolphins are not ' enjoying ' the beauty of the environment. Because their vision lacks cells that are capable of receiving this color .