Blathers' Blabber: Moray eels can often be seen sticking just their heads out from between two rocks. When unsuspecting prey approaches, they dart out to snatch it up into their sharp-toothed mouths.

It’s time for bed, and what better way to ensure a comfortable sleep than snuggling into a cocoon of your own mucus? Humans could probably think of some alternatives, but for many coral reef fish, ...