Juergen Freund / Nudibranch (Phyllodesmium longicirrum), known as a solar-powered nudibranch because of its symbiotic relationship with photosynthetic zooxanthellae in its tissues. Lembeh Strait, North Sulawesi, Indon...

Juergen Freund / Nudibranch (Phyllodesmium longicirrum), known as a solar-powered nudibranch because of its symbiotic relationship with photosynthetic zooxanthellae in its tissues. Lembeh Strait, North Sulawesi, Indon...

Tim Laman / Nudibranch (Phyllodesmium longicirrum) close-up, Raja Ampat, West Papua, Indonesia, April 2007

Constantinos Petrinos / Nudibranch (Phyllodesmium longicirrum) Sulawesi, Indonesia

Chris Newbert / Nudibranch (Phyllodesmium longicirrum) 70 feet deep, Papua New Guinea

Fred Bavendam / Nudibranch (Phyllodesmium longicirrum) feeding on a small colony of Soft Coral (Dendronephthya sp), Lembeh Strait, Indonesia

Birgitte Wilms / Nudibranch (Phyllodesmium longicirrum), Papua New Guinea