Phyllidia varicosa

Varicose phyllidia | nudibranch
Phyllidia varicosa
Phyllidia varicosa, Raja Ampat, Indonesia, Photo: Andrew Green
Phyllidia varicosa
Phyllidia varicosa, Bali, Indonesia, Photo: Nicola Davis
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Phyllidia varicosa
Phyllidia varicosa


Mediterranean, Tropical Indo-Pacific


Blue body with black markings and yellow tubercles. Foot sole has a black line. Similar species Phyllidia coelestis has a y shaped marking in front of the rhinophores and lacks the line on the foot.


Max Size: 12 cm

Sea Temperature Range: 22.9-30.9°C

Depth: N/A

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Infrequent (5.1% 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.

Edit by: Nicola Davis