Warty protuberances on head and body. Colour dependent on host gorgonian colour, mostly pink or yellow. Solitary or in loose groups, on Muricella gorgonians, usually deeper than 20 m. Only attains about 3cm. Similar H. denise is leaner with less lumpy body markings, and has apparently been recorded in Australia.

• Max Size: 5 cm
• Sea Temperature Range: 26.0-30.6°C
• Depth: 16-40m
• Habitat: Coral Reef

• Threats: Exploitation, Habitat degradation
• IUCN Threat Status: Data Deficient
• Occurrence: Infrequent (2% of sites)
  Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
• Abundance: Solitary (1 per transect)
  Abundance is calculated as the average number of individuals recorded per RLS transect, where present.