It's long been known that people blink to keep their eyes moist and protected, but less known is how we evolved the phenomenon. A new study on an amphibious fish offers clues
High-speed video recordings of the blinking mudskippers in the lab revealed that the"walking" fish accomplish this feat by pulling their eyeball back into its socket to allow the skin to close around it.
“They used quite powerful methods to test, step by step, why these animals developed a blinking system,” Simões says.
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