Pufferfish blink by pulling in their eyeballs and puckering their skin

Pufferfish are the only bony fish that can blink – and they do so by sinking their eyeballs deep into their sockets and puckering the skin surrounding the eye together Source: https://www.newscientist.com/article/2269187-pufferfish-blink-by-pulling-in-their-eyeballs-and-puckering-their-skin/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…