Coryphellina poenicia

Coryphellina poenicia is a small sea slug that can reach a maximum length of 25 mm. Its body is translucent, sometimes exhibiting a purplish hue, with distinctive purple crescent-shaped jaw plates visible in the head. The cerata, which are the fleshy appendages on its back, feature a deep orange-red band near their tips, while the digestive gland typically appears orange or yellow. The cnidosac is opaque white, and the upper half of the rhinophores may have papillae, although these can be absent in juvenile specimens. This species is found in Southeastern Australia, specifically from New South Wales to South Australia, and is typically located in shallow waters, with all recorded occurrences being less than 40 meters deep. About 90% of the records are from depths shallower than 20 meters. It is often encountered in various marine habitats, including coral reefs and rocky reefs. Coryphellina poenicia feeds primarily on small invertebrates, utilizing its specialized feeding mechanisms to graze on its prey. The reproductive habits of this species are not detailed in the sources, but nudibranchs generally exhibit hermaphroditic traits, allowing them to mate with any other individual they encounter. Divers may find this species while exploring shallow reefs, where its colors can make it stand out against the backdrop of the ocean floor. Observing this nudibranch can be a rewarding experience, as they often display unique behaviors while foraging or resting on the substrate.