Say hello to Ruby, the seadragon that until recently no one knew existed.

A bright red, black-eyed bony beauty, it is only the third species of these peculiar Australian marine creatures ever discovered.

All the time, it was drifting right under scientists' noses.

The ruby seadragon is believed to live in dark waters beyond normal scuba diving depth, and so escaped attention, unlike its relatives, the leafy and weedy seadragons.