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Why do fish need sunscreen? [Coffee-byte]

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Danio rerio, better known as the zebrafish (Photo credit: Wikipedia)If you remember your last trip to the beach and try to list out the things you took for this trip, chances are that the sun block or sunscreen will feature in there. Why just the beach, using a sun screen is almost a part of our daily routine, whenever we know we will be spending time under the sun. But, as you might have noticed, it is only humans who wear a sun block while the rest of creatures walk, swim and fly on the planet, unprotected. As much as we, humans, like to think that we are the smartest on the planet, we actually are not. The fact is that we have to manufacture our sun blocks in factories, whereas fishes can do it on their own. Why just adult fishes, even fish eggs can do this nifty trick that protects them from harmful sunrays.
Research conducted at the Oregon State University, shows that zebrafish can produce this magic chemical called gadusol, that can protect it from UV-B rays of the sun. Before th…