MacroDivers nudibranch logo MacroDivers Explore . Learn . Conserve

Phyllidia coelestis

Sky Blue Phyllidia

© Di Syrett / MacroDivers.com

About this species

Current scientific name
Phyllidia coelestis
Common name
Sky Blue Phyllidia
Order
Nudibranchia - Doridoidea (Dorids)
Type
Porostomata (Radula-less dorids)
ID confidence
Confirmed
Genus
Phyllidia
Species
coelestis
Average size
60 mm
Colours
black, blue, yellow
Pattern
Lines, Tubercles
Body shape
Oval
Rhinophores
Horizontal
Gills
Hidden
Similar species
Many other Phyllidia

Geographic Distribution

Indian and western Pacific Oceans.

Identification

Common. Black body with blue ridges, some of which have yellow tubercles. The ridges leave three clear black lines running from front to back. The lamellate rhinophores are yellow.

Our Sighting

Anilao — 28 January 2026

Location seen
Anilao, Philippines
Date seen
2026-01-28
Depth
20

About our records

All sightings and photographs on this page are from our own dives. Locations shown are places where we have personally recorded this species. About MacroDivers.