Can Sharks See Colors?
Oceans are the places where one can find colorful fishes, unique plants, corals etc. In the depths of the ocean, nature has painted beautiful and colorful pictures. But most of the aqueous creatures cannot see colors. A recent research has revealed that sharks are also incapable of recognizing colors. For aqueous creatures, the world is a black and white picture.
For both humans and animals, retina will be present in the eyes. Light that falls on the retina is absorbed by a system that helps in vision. Two types of cells are present in the retina that absorbs light. They are Rod and Cone cells. Rod cells helps in recognizing the differences in severity of light and movement of objects while cone cells help in recognizing different colors. Scientists observe the retina of any animal and find out how they can see the world.
Scientists have done research in Australia on 17 species of Sharks. Ten of the 17 types of sharks do not have cone cells while the remaining has only one type of cone cells. With this scientists have determined that sharks cannot differentiate between colors.
Every year, lakhs of sharks are dying because of nets that are laid for fishes. If it is known how their vision is, baits and nets that do not attract the vision of sharks can be made to prevent danger for them. Swimming dresses for divers can also be made such that they do not attract the attention of sharks.
- Dogs and cats cannot see red and green colors.
- World is full of white and black colors for cows and buffaloes.
- Most of the fishes and birds can see colors.
- Honey bees can see even ultraviolet colors that human eye cannot see.
- Ants cannot see red color.