Briareum Phyllodesmium

Phyllodesmium briareum uses camouflage and resembles the soft coral Briareum violacea.

"P. briareum is one of several species which has a symbiotic relationship with zooxanthellae . The brownish colored specks on the animals body are one-celled plants, or zooxanthellae which are held in the aeolid's digestive gland. Within the tissue of the nudibranch they continue to grow, reproduce and carry out the process of photosynthesis, providing nutrients to the host." - source : http://slugsite.us/bow/nudwk282.htm