When seeing this image for the first time, you would perhaps immediately identify it as ‘photoshopped’. But this tiny dragon-like creature is real. Glaucus atlanticus is a species of small-sized blue sea slug, described in Wikipedia as follows.
The normal size of this species is up to 3 cm. It is silvery grey on its dorsal side and dark and pale blue ventrally. It has dark blue stripes along the edge of its foot. It has a tapering body which is flattened and has six appendages which branch out into rayed cerata. Its radular teeth bear serrated teeth on their blades.
And this is the image Wikipedia gives for the creature.
