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Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Scientists have discovered a new species of shark that glows in the dark

Scientists have discovered a new species of shark that glows in the dark



The 5 1/2-inch American Pocket Shark is the first of its kind to be discovered in the Gulf of Mexico, according to a new Tulane University study. It's less fearsome than it's wondrous.
Scientists stumbled upon teeny male kitefin shark in 2010 while studying sperm whales in the Gulf. It was not observed until 2013, when the National Oceanic and Atmospheric Administration (NOAA) researcher Mark Grace found it in a pool of less luminous specimens.

It's only the second pocket shark ever captured or recorded, Grace said in a statement. The other was found in 1

979 in the eastern Pacific Ocean.

"Both are separate species, each from separate oceans," he said. "Both are extremely rare."

According to the paper, the shark secretes a glowing fluid from a tiny pocket gland near its front fins. It's thought to help attract prey, who are drawn to the glow while the tiny predator, practically invisible from below, stealthily attacks.

A glow-in-the-dark ocean organism is hardly unique. NOAA estimates about 90% of the animals that live in open water are bioluminescent, although research on deep sea creatures is scant.

An animal's glow is triggered by a chemical reaction that emits light energy, according to the Smithsonian National Museum of Natural History. Organisms light up to attract a mate, warn an attacker to stay away or, in most cases, make a meal out of a smaller swimmer.
 A deep sea of ​​black sea buckthorns with a bioluminescent appendage.
Remember the fanged fish with the glowing antenna that terrified Marlin and Dory in "Finding Nemo?" It's called a black seadevil, and it's very real and very terrifying. True to its name, it lures its prey towards its jaws by dangling and bioluminescent spine from its top of its head, says the Monterey Bay Aquarium Research Institute.

Shudder.

More charmingly, the hordes of bioluminescent plankton turn oceans neon blue at night, a response that drives predators ready to munch on them. The dinoflagellates discolour the water in a phenomenon known as red tide, according to the Scripps Institution of Oceanography.


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