Inverted Vampire squid. Vampire squid have eight webbed arms, tipped with suckers and lined with fleshy spines (called cirri), and two retractable sensory filaments. When threatened, it inverts so that the cirri point outwards in a menacing fashion
Vampire Squid Vampyroteuthis infernalis, not because it sucks blood but "because they have the ability to ‘cape’ themselves up with their membrane, which is black underside, looking just like a vampire wearing a black cape!"
Cool video....The Vampire Squid From Hell, sciencefriday: Vampyroteuthis infernalis is neither a vampire, nor a squid, by is a gentle cephalopod, a steward of the ocena's depths, which gracefully foragaes on marine detritus, marine 'snow'.