Goniobranchus kuniei is a species of very colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.
Goniobranchus kuniei has a pattern of blue spots with pale blue haloes on a creamy mantle. There is a double border to the mantle of purple and blue. The length of the body reaches 40 mm. The species Goniobranchus tritos and Goniobranchus geminus have similar colour patterns.
This species was described from New Caledonia. It is known from the western Pacific Ocean and eastern Indian Ocean from Fiji, Marshall Islands, Australia, Papua New Guinea, Indonesia, Malaysia, Philippines, and the Taiwan.
This species likes waters that are between 21 and 26 degrees Celsius and is often found between 5 and 40 meters.
