ceratosoma trilobatum, three-lobed t-bar nudibranch. north sulawesi

alfred animalia asia bar celebes ceratosoma chromodorididae coral diving doridoidea gastropod gastropoda indonesia island less lobed marine minahasa mollusc mollusca nature north nudibranch nudibranchia ocean peninsula pulisan resort russel scuba sea shell slug sulawesi three travel triangle trilobatum tropical tropics underwater wallace wallacea water