in water and aquatic animals become myopic (near-sighted) in air. In some fish, this gain or loss of lens power amounts to as much as 20 to 30 dioptres 1.

In aquatic settings, fish shed cells, mucus, scales, and other biological matter containing DNA, which can be extracted from water samples. “This genetic material floats in the water, where they can ...

These days, depending on your location, it could be marked with a fish secretly pinned to someone’s back or a whoopee cushion or even news reports of flying penguins (yes, that actually happened ...