Aplysia juliana

Julianas seahare | Juliana Seahare
Aplysia juliana
Aplysia juliana, NSW, Australia, Photo: Tom Davis
Aplysia juliana
Aplysia juliana, Lord Howe Is, NSW, Australia, Photo: Ian Shaw
1 / 2
Aplysia juliana
Aplysia juliana


Mediterranean, Temperate Africa, Temperate Australasia, Tropical Atlantic/Caribbean, Tropical Eastern Pacific, Tropical Indo-Pacific


Lacks the ink gland that produces the typical Aplysia purple ink. Instead secretes a milky white substance.


Max Size: 8 cm

Sea Temperature Range: 16.2-24.9°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: Frequent (10.3% 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