A shark is the only fish that can blink with both eyes. See more

Fish that live more than 800 meters below the ocean surface don't have eyes. See more

Topless saleswomen are legal in Liverpool, England, but only in tropical fish stores. See more

Most lipstick contains fish scales. See more

Those stars and colours you see when you rub your eyes are called phosphenes. See more

Topless saleswomen are legal in Liverpool, England - but only in tropical fish stores. (But of course!) See more

Icthyomaniacs are people who are crazy about fish. See more

Women blink nearly twice as much as men. See more

You cannot sneeze with your eyes open. See more

Our eyes are always the same size from birth, but our nose and ears never stop growing. See more

You will have to walk 80 kilometers for your legs to equal the amount of exercise your eyes get daily. See more

Most marine fish can survive in a tank filled with human blood. See more