World of Sea : Color Blind Shark
According to new research, swimwear reassure white or blue can protect against shark attacks.
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The researchers found that the eyes of a shark, shark, including cows and tiger sharks are not designed to distinguish the color of your eyes, lest they see the world in black and white.
This means that unlike the pale blue sea, it would be best to calm a colorful swimsuit to reduce the difference in contrast or color of the water.
The study supports the statistics of the International Shark Attack File (ISAF), which shows that most shark attacks occur in divers and surfers who said take the water black.
The team of researchers from the University of Western Australia and Queensland University of eyes examined for 17 species of fish, including sharks, cow sharks, tiger sharks, reef sharks and sharks in Port Jackson.
They found that the retina of the eye, they have only one cone (cone or light detectors) that can detect light or dark. This means that an apple is red just thought something dark for them.
But human beings have three cones to distinguish the colors red, green and blue.
As reported by the Telegraph (01.18.11), Professor Nathan Hart, director of the study, said the shark vision could be compared to see the black and white television.
“If sharks lack of color vision, it means that the contrast of light is important to detect and identify objects,” he said.
“We can use this information to help design a boat ride and some swimsuits that are less attractive or repulsive more attention to reduce shark attacks on humans.
“You can also use a long hook to design less attractive to sharks and reduce the number of sharks die of exploits caught each year.”
Mr. Hart said that more research is needed to determine which model works best for dodging sharks.
“The next step is to look at behavior,” he said.
Although most bony fish (bony fish, Osteichthyes) have some color vision, whales, dolphins and seals are also suspected of having a single cone.
The new study is surprising, because the shark is one of the world’s most powerful hunters.
Until now, experts believe that the evolutionary success of sharks are the sensor system is highly customized, including the vision.
But now it seems that sharks actually rely on other mechanisms as well, the combination allows the effectiveness of such creatures in the hunt.