Birgitte Wilms / Nudibranch (Nembrotha sp) pair mating, Papua New Guinea

Birgitte Wilms / Nudibranch (Nembrotha sp) pair mating, Solomon Islands

Juergen Freund / Nembrotha nudibranch (Nembrotha sp) crawling on a Golden sea squirt / or tunicate (Polycarpa aurata). Misool, Raja Ampat, West Papua, Indonesia.

Chris Newbert / Nudibranch (Nembrotha sp) pair mating showing a detail of genitalia, Indonesia

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

Georgette Douwma / Nudibranch {Nembrotha kubaryana} pair feeding on Ascidians / Sea squirts (Sycoza sp) Rinca, Indonesia

Georgette Douwma / Nudibranch {Nembrotha kubaryana} pair feeding on Ascidians / sea squirts (Sycoza sp) Rinca, Indonesia

Chris Newbert / Nudibranch (Nembrotha sp) 40 feet deep, Papua New Guinea

Chris Newbert / Nudibranch (Nembrotha lineolata) on algae, 60 feet deep, Papua New Guinea

Juergen Freund / Nudibranch {Nembrotha sp} Indo-Pacific

Juergen Freund / Nudibranch {Nembrotha sp} on tunicate, Indo-Pacific

Birgitte Wilms / Nudibranch (Nembrotha lineolata) laying eggs on a Ink-spot Ascidian (Polycarpa aurata), Solomon Islands

Fred Bavendam / Nudibranch (Nembrotha sp), Manado, North Sulawesi, Indonesia

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

Fred Bavendam / Nudibranch (Nembrotha sp) underwater, side view, Manado, North Sulawesi, Indonesia

Juergen Freund / Dorid nudibranch {Nembrotha sp} South Pacific, Philippines.