Florent's Guide To The

Tropical Reefs

Sky Blue Phyllidia
Phyllidia coelestis
Sky Blue Phyllidia
Category: Dorid Nudibranchs
Scientific Name: Phyllidia coelestis
Size: Up to 2.25 in. (6 cm)  
Depth: 15-100 ft. (5-30 m)
Distribution: Indo-West Pacific
Mollusca (Phylum)
└Gastropoda (Class)
 └Heterobranchia (Subclass)
  └Euthyneura (Infraclass)
   └Nudibranchia (Order)
    └Doridina (Suborder)
     └Phyllidiidae (Family)
      └Phyllidia (Genus)














































































































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© 2025 Florent Charpin