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Whale sharks do not have eyelids and, with their eyes at the corners of their heads, they are exposed to the elements moreso than other animals. To protect their eyes some have nictitating membranes. Where will it all go? Whale sharks, unlike some other shark species, don’t have eyelids. I'm sure that many listeners have experienced falling asleep with the radio on, hopefully not during the Naked Scientists! My, what big eyes you have... the better to eat you with? Hurricane Harvey ultimately dumped around 27 trillion gallons of rain on Texas and Louisiana. A shark may have 4 to 6 eyelids, or 2 to 3 eyelids in each eye. Sharks don’t have eyelids and therefore are not able to shut their eyes. A Bonnier Corporation Company. Sharks have eyelids, but they do not blink because the surrounding water cleans their eyes. 1 decade ago. Can a hunter outrun an antelope? They can also retract their eyes if need be to protect them from other creatures in the sea, and unlike most other sharks, they do not have eyelids. 4 to 6. do sharks have eyelids, ... highly regarded. Whale sharks have 'armored eyes' that protect its vision because the species does not have eyelids. Most sharks spend their time cruising calmly and eating. do sharks have eyelids report : organism totals a synchrony of proficient passing it is the same poison reflected in the mirror dappled have eyelids, instead of closing eyes, they roll their eyes upwards and backwards to protect. Fish do not have eyelids; hence, they don’t blink. The researchers looked at the eyes of living and dead whale sharks in both Japanese and American aquariums for their research. However, some have what is called a nictitating membrane that can cover and protect the eye when feeding. But the mako shark's popularity is not doing it ... take action on the mako shark's plight. I imagine a pointy fish fin the eye would be a bit unpleasant. No. Check out what's clicking on FoxNews.com. Relevance. 1 decade ago. In fact, only some species of sharks have something similar - nictitating membranes, which cover their eyes completely while they feed. Therefore, snakes never blink. Instead, they roll their eyes back. … Some sharks have a membrane that covers the eyes while hunting and when the shark is being attacked. In case you wonder about those who don’t have nictitating membrane, well those sharks simply roll their eyes back to their head, literally. When it's feeding time, or when the shark has an encounter with another shark, it will close the eyelids to protect the eyes from abrasion. Many sharks can contract and dilate their pupils, like humans, something no teleost fish can do. Can Sharks Drown? A study published in April suggested that Cold War-era nuclear bombs could be used to determine how long whale sharks can live. So, what do sharks do when they’re not sleeping? 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