[1][2] This species was described from a specimen found in shallow water feeding on Zoanthids at Mana Huanja Island, Mtwara Region, Tanzania.

[1] Baeolidia lunaris has a translucent brownish body covered with fine iridescent opaque white spots.

The rhinophores are approximately equal in length to the oral tentacles and are densely covered by elongate papillae.

The oral tentacles are short and slender, tapering near apices, also translucent brown in colour.

There is a crescent-shaped white spot on anterior side of cerata, close to the base.