Swimming Flatworm, Pseudoceros spec., Short Dropoff, Micronesia, Palau

macro closeup close up close up portrait reef reefs coralreef coralreefs coral reef turbellaria flatworm flatworms plathelminthes worm worms planaria platyzoa eumetazoa marine invertebrate mollusks mollusc mollusca snails nudibranch nudibranchs nudibranchia snail sea snail seasnail sea slug slug pink purple underwater marine wildlife marine fauna nature aquatic sea ocean underwaterphoto underwaterpicture underwaterphotography underwaterworld sealife carolines islands carolines pacific oceania oceanica swimming flatworm pseudoceros spec short dropoff micronesia palau horizontal format