Can you guess what vibrant creature this is…? It’s a sea slug! Those curly projections on the “back” of the slug are known as cerata; each ceratum includes an extension of the ducts of the digestive gland.
#NatGeoExplorer and #PhotoArk founder @JoelSartore documented this Brazilian aeolid nudibranch (Spurilla braziliana) at Gulf Specimen Marine Lab and Aquarium.
More posts from National Geographic Society @insidenatgeo