Hiroya Minakuchi / Nudibranch (Hypselodoris bullockii) pair mating, Borneo, Malaysia

Magnus Lundgren / Wild Wonders of China / Bullock's hypselodoris (Hypselodoris bullockii) Xiaoliuqiu Island, Taiwan

Georgette Douwma / Nudibranch (Hypselodoris bullockii), West Papua, Indonesia. March.

Georgette Douwma / Nudibranch (Hypselodoris bullockii), Philippines. September.

Tony Wu / Nudibranchs (Hypselodoris bullocki) mating, Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Nudibranch (Hypselodoris bullockii) Mabul, Malaysia.

Georgette Douwma / Nudibranch (Hypselodoris bullockii) with a ribbon of eggs. Mabul, Malaysia.

Sue Daly / Nudibranch (Hypselodoris bullockii) Lembeh Straits, Sulawesi, Indonesia

Sue Daly / Nudibranch (Hypselodoris bullockii) Lembeh Straits, Sulawesi, Indonesia

Norbert Wu / Nudibranch (Hypselodoris bullockii), Komodo Island, Indonesia

Georgette Douwma / Nudibranch {Hypselodoris apolegma} (previously H. bullockii) with an Emperor shrimp (Periclemenes imperator) Rinca, Indonesia

Georgette Douwma / Nudibranch {Hypselodoris apolegma} (previously H. bullockii) with an Emperor shrimp (Periclemenes imperator) Rinca, Indonesia