macro nudibranc creatures underwater

animal aquatic blue borneo chromodorididae close color colorful coral deep desert dive diving drops exotic fish gastropod gastropoda gastropods invertebrate invertebrates island lankayan life macro malaysia marine mollusca mollusk mollusks nudibranc nudibranchia nudibranchs ocean ophisthobranchia opisthobranchia opisthobranchs portrait purple reef risbecia sabah saltwater scuba sea slug slugs travel tropical tryoni underwater vacation vertical water wet white wildlife yellow