stuckinabucket:

camwyn:

sci-universe:

Glaucus atlanticus, the blue dragon (also called sea swallow and blue angel), is a species of small-sized blue sea slug. This tiny animal spends its life floating upside-down on the surface of the Pacific, Atlantic, or Indian Ocean thanks to an air bubble which it swallows and keeps inside its belly, going wherever the currents and the wind take it.

This cute-looking creature is actually an aggressive predator that feeds on organisms much larger than itself, including the most venomous ones. It also can give you a poison sting when picking one up barehanded.

Reblogging for the animated shots.

Yes, thank you animation.  These guys eat velella (not harmful to humans) and Portuguese men o’ war (the worst things in the ocean, yes, including thresher sharks) to steal their power.