Florent's Guide To The

Tropical Reefs

Pacific Nut Sheath Bubble
Atys naucum
Pacific Nut Sheath Bubble
Category: Bubble Snails
Scientific Name: Atys naucum
Size: Up to 1.5 in. (4 cm)  
Distribution: Indo-Pacific
Mollusca (Phylum)
└Gastropoda (Class)
 └Heterobranchia (Subclass)
  └Euthyneura (Infraclass)
   └Cephalaspidea (Order)
    └Haminoeidae (Family)
     └Atys (Genus)
      └A. naucum (Species)

Sea Slugs
Bubble Snails

Pacific Nut Sheath Bubble

Striped Atys

Yellow-Spotted Bubble Snail

Brown-Lined Paperbubble

Micromelo guamensis



All Photographs
© 2026 Florent Charpin