Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Blue Dragon Nudibranch
Pteraeolidia semperi
Blue Dragon Nudibranch
Category: Aeolid Nudibranchs
Scientific Name: Pteraeolidia semperi
Size: 1 to 5 in. (2.5 to 12 cm)  
Depth: 10-100 ft. (3-30 m)
Distribution: Indo-Pacific, Hawaii
Mollusca (Phylum) Mollusks
└Gastropoda (Class) Gastropods
 └Heterobranchia (Subclass) Heterobranchs
  └Euthyneura (Infraclass)
   └Nudipleura (Superorder)
    └Nudibranchia (Order) Nudibranchs
     └Aeolidina (Suborder)
      └Aeolidioidea (Superfamily) Aeolid Nudibranchs
       └Facelinidae (Family)
        └Pteraeolidia (Genus)
         └P. semperi (Species)
WoRMS ID: 764917🔗
iNaturalist ID: 469568🔗

All Photographs
© 2026 Florent Charpin