Clione limacina, known as the naked sea butterfly, sea angel, and common clione, is a sea angel (pelagic sea slug) found from the surface to greater than 500 m (1,600 ft) depth. It lives in the Arctic Ocean and cold regions of the North Atlantic Ocean. It was first described by Friderich Martens in 1676 and became the first gymnosomatous (without a shell) "pteropod" to be described. Naked sea butterflies are very special in their predation process. Their mouthparts have three pairs of tentacle-l

We came across this amazing video of a Sea Angel by the Aquatilis Expedition. Those beautiful colors are actually their internal organs! Its heart is red, gonads red-orange, and other internal structures are yellow. The ocean is truly magnificent. 📷: @aquatilis_expedition (IG) #blueoceans | SSI

212K views · 7.1K reactions | Incredibely rare footage of a Sea Angel was captured off the coast of Russia recently and it looks incredible  | UNILAD Adventure | Facebook