The frogfish is an unusual creature because of the way it catches its food. Long threads that look like fishing lines grow out of the frogfish’s head. At the end of these threads are barbs, resembling the notched ends of a fishing hook.

As the frogfish waits for its prey, it lets these threads float in the water. Smaller fish, thinking these threads are worms, take a nibble. But that nibble hooks them on the barb and they are immediately eaten by the “fisherman.”