Frogfish are one of those fish nearly all divers are drawn to (provided you can find them). They are weird animals: they look more like a sponge or lump of algae than a fish, they don’t bother swimming but walk across the bottom instead, they can gulp down prey larger than themselves, and they have what is basically a fishing rod stuck to their foreheads. New research has now found that they are even weirder than you already thought, something is up with the lures at the end of their “fishing rod”.