A beautiful nudibranch (Glossodoris rufomarginata) crawls across the black sand seafloor in Lembeh Strait, Indonesia.

animal animal themes animals in the wild aquatic beauty in nature biogeography bizarre black sand brown caramel nudibranch color image day ecology front view full length gastropod girdled nudibranch glossodoris rufomarginata horizontal indonesia lembeh lembeh strait marine biology mollusk no people nudibranch ocean floor one animal orange outdoors pacific ocean photography sea life sea slugs seabed seafloor soft bodied southeast asia sulawesi undersea underwater wildlife