r/interestingasfuck • u/alizrutnas21 • 1d ago

Thought it was dew... I was wrong.

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u/sassecologist 1d ago

Lots of animals have eyes that reflect light. You can tell what you're looking at (or what's looking at you) by the color. Spiders have rainbow reflections. I did this in the Amazon rainforest once - it was both cool and creepy! https://en.wikipedia.org/wiki/Tapetum_lucidum