Just when you thought it was safe to go back in the water, scientists say there is a species of shark that is invisible. Well not really invisible. But the 'Lantern Shark' can use photophores in its skin to make its body glow like the sunlight above water, making it difficult to see when looking up at it in the ocean.

Therefore, the shark's prey can't see it coming. And predators can find them. Luminescence is used by many underwater creatures as a way to defend itself or attract food. The 'Lantern Shark' can be found in the northeastern Atlantic Ocean and off the coasts of Japan and China.

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