Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Blue Glaucus
Glaucus atlanticus
Blue Glaucus
Category: Aeolid Nudibranchs
Scientific Name: Glaucus atlanticus
Size: Up to 1.5 in. (4 cm)  
Depth: 0-10 ft. (0-3 m)
Distribution: Circumtropical
Mollusca (Phylum) Mollusks
└Gastropoda (Class) Gastropods
 └Heterobranchia (Subclass) Heterobranchs
  └Euthyneura (Infraclass)
   └Nudipleura (Superorder)
    └Nudibranchia (Order) Nudibranchs
     └Aeolidina (Suborder)
      └Aeolidioidea (Superfamily) Aeolid Nudibranchs
       └Glaucidae (Family)
        └Glaucus (Genus)
         └G. atlanticus (Species)
WoRMS ID: 140022🔗
iNaturalist ID: 50498🔗

All Photographs
© 2026 Florent Charpin