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Two deep-ocean species of cephalopod, an octopus and a squid, can go from transparent to opaque in the blink of an eye, a new study finds. This impressive camouflage swap is an adaptation that likely ...

Add Yahoo as a preferred source to see more of our stories on Google. A man gets seen through the transparent toilet as he unlocked the door after use at Haru-no-Owaga Community Park in Tokyo on ...

Becoming invisible is probably the ultimate form of camouflage: you don't just blend in, the background shows through you. And this strategy is not as uncommon as you might think. Kathryn Feller, from ...