Nature’s Most Amazing Eyes Just Got A Bit Weirder

Eyes are testaments to evolution’s creativity. They all do the same basic things—detect light, and convert it into electrical signals—but in such a wondrous variety of ways. There are single and compound eyes, bifocal lenses and rocky ones, mirrors and optic fibres. And there are eyes that are so alien, so constantly surprising, that after decades of research, scientists have only just about figured out how they work, let alone why they evolved that way. To find them, you need to go for a swim.

This is the eye of a mantis shrimp—an marine animal that’s neither a mantis nor a shrimp, but a ...

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