gem sea slug, goniobranchus geminus. scuba diving in north sulawesi, indonesia

alfred animalia asia bangka celebes chromodorididae coral critter diving doridina doridoidea euthyneura exotic gangga gastropoda gem geminus goniobranchus heterobranchia indonesia island lembeh macro manado minahasa mollusca nature north nudibranch nudibranchia ocean orient pacific pulisan resort russel scuba sea slug sulawesi travel triangle tropical tropics underwater wallace wallacea water