Michele Westmorland / Nembrotha nudibranchs (Nembrotha purpureolineolata) mating, Komodo Park, Indonesia

Franco Banfi / Nudibranch (Nembrotha rutilans) feeding on ascidian, Rhopalaea, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Franco Banfi / Nudibranch (Nembrotha rutilans) Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Chris Newbert / Nembrotha Nudibranch (Nembrotha sp) pair mating, Indonesia

Solvin Zankl / Nudibranchs mating {Nembrotha rutilans} Lembeh, Sulawesi

Fred Bavendam / Nembrotha Nudibranch (Nembrotha rutilans) portrait, underwater, Manado, North Sulawesi, Indonesia

Juergen Freund / Nudibranch (Nembrotha rutilans) feeds on tunicate. Philippines, Pacific Ocean

Juergen Freund / Nudibranch {Nembrotha rutilans} feeding on tunicate. Philippines

Tony Wu / Purple-lined nembrotha nudibranch (Nembrotha purpureolineata) portrait. East China Sea, Kagoshima Prefecture, Japan.