sea slug underwater, mottled sea hare, doriprismatica cyanomarginata, marine gastropod mollusk, red sea, egypt. dorid nudibranch.

animal aquatic background beautiful biology blue bright close closeup colorful coral creature diving environment fish flatworm gastropod gills indonesia invertebrate island life macro marine mediterranean mollusc mollusk natural nature nudibranch ocean pacific red reef scuba sea slug snail tropical undersea underwater water wild wildlife worm yellow zoology