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These pygmy seahorses are so good at changing colors for camouflage

Pygmy seahorses are super tiny creatures that have the awesome ability to camouflage. They attach themselves to colorful corals and blend in so seamlessly that I have a hard time picking them out. What's cool is that even if the pygmy seahorses are descendants of orange seahorses, they can adapt and become purple if…

Why No One Used Camouflage Until WWI

The general idea behind visual camouflage, which is to make distinctive, recognizable shapes difficult to pick out against a background, was nothing new in 1914. The point of camouflage isn't necessarily to make oneself totally invisible, which isn't practical for a large army.

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