Red-lined Nudibranch

This beautiful turquoise and purple creature is an aeolid nudibranch. The aeolid nudibranch is covered by branches that are actually gills, called cerata. The cerata also contain parts of the nudibranchs digestive system.
(billunder, Flickr)

This beautiful turquoise and purple creature is an aeolid nudibranch. The aeolid nudibranch is covered by branches that are actually gills, called cerata. The cerata also contain parts of the nudibranchs digestive system.