Scientists unravel secrets of ultra-black fish swimming the deepest depths

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For fish inhabiting the immense darkness of the deep sea, being ultra-black offers great camouflage in a fish-eat-fish world. Scientists studying ...

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These fish - like the fangtooth, the Pacific blackdragon, the anglerfish and the black swallower - have modified the shape, size and packing of the pigment in their skin to the point that it reflects less than 0.5 per cent of light that hits it, researchers said on Thursday .They studied 16 species that fit this definition of ultra-black.

At such depths, bioluminescence - light emission by living organisms - is the only light source. Some of the ultra-black fish have bioluminescent lures on their bodies to coax prey close enough to be eaten.

 

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