Big Ceratosoma Trilobatum Nudibranch - Ceratosoma trilobatum is a species of colorful dorid nudibranch, a sea slug, a shell-less marine gastropod mollusk in the family Chromodorididae. Beautiful Sea Creatures, Deep Sea Creatures, Animals Beautiful, Underwater Creatures, Underwater Life, Beneath The Sea, Sea Slug, Tier Fotos, Sea And Ocean