Dirona albolineata

White-line dirona
Dirona albolineata
Dirona albolineata, British Columbia, Canada, Photo: Em Lim
Dirona albolineata
Dirona albolineata, British Columbia, Canada, Photo: Ross Whippo
Dirona albolineata
Dirona albolineata, Photo: Graham Edgar
Dirona albolineata
Dirona albolineata, Photo: Graham Edgar
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Dirona albolineata
Dirona albolineata
Dirona albolineata
Dirona albolineata

Distribution


Description

Named for the white edging around the pointed cerata, this species will readily shed all cerata when stressed. Body and fleshy processes are translucent white to pink or orange-tinged. The frontal veil is also edged in white, and a white stripe extends along the tail. 


Information

Max Size: 18 cm

Sea Temperature Range: 1.8-17.5°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: Common (43.8% 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: Few (2 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.