Hypselodoris paradisa

Hypselodoris paradisa is a small nudibranch characterized by its translucent pink body, which features opaque white spots and diffuse purple markings on its head, tail, and back of the mantle. The mantle has longitudinal dashed white lines and is dotted with dark wine-red spots, particularly concentrated at the edges. Its gills are off-white with red tips, while the rhinophores have off-white clubs adorned with three orange rings and a transparent shaft. Although it shares visual similarities with Hypselodoris decorata and Hypselodoris maculosa, genetic analysis indicates that its closest relatives are actually Hypselodoris skyleri and Hypselodoris katherinae. The holotype of this species measures just 10 mm in length, highlighting its small size. This nudibranch is found exclusively in Papua New Guinea, having been first described from Pig Island in Madang Lagoon. It thrives in shallow waters, with all recorded occurrences at depths less than 40 meters, and 90% of sightings occurring at depths shallower than about 30 meters. Hypselodoris paradisa typically inhabits coral reefs and lagoons, making it a potential find for divers exploring these environments. Diving encounters with this species can be intriguing, as divers may appreciate its unique coloration and patterns. Its diet mainly consists of small invertebrates, which it grazes on within its habitat. Being a hermaphroditic species allows Hypselodoris paradisa to breed with any other individual it encounters, which aids in its reproductive success. Currently, there is no specific information available regarding its conservation status.