Halgerda À Taches Orange

Overview

Halgerda aurantiomaculata is a distinctive dorid nudibranch belonging to the family Discodorididae. It is primarily found in the tropical waters of the southwestern Pacific, including regions around Australia, Papua New Guinea, and Fiji.

Appearance

This sea slug features an oval-shaped body with a white background, characterized by prominent, orange-tipped tubercles and large orange patches distributed across the dorsum. A thin, solid orange border typically edges the mantle. Its rhinophores and gill plumes are white and marked with small black speckles. The rhinophores are smooth at the base with lamellae on the distal portion. While individuals can reach up to 13 cm in length, they are more commonly observed between 5 and 7 cm.

Biology & behavior

Like other members of the genus Halgerda, this species is a sponge-feeder. It is typically found inhabiting coral reef environments. The species is known for its striking coloration, which serves as a key identifier, though it can sometimes be confused with similar species like Halgerda carlsoni, which lacks the solid mantle border and features different spot patterns.