Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Grand Coral Worm Snail
Thylacodes grandis
Grand Coral Worm Snail
Category: Worm Snails
Scientific Name: Thylacodes grandis
Size: Up to 1 in. (2.5 cm)  
Distribution: Indonesia, Philippines, Great Barrier Reef
Mollusca (Phylum) Mollusks
└Gastropoda (Class) Gastropods
 └Caenogastropoda (Subclass) Caenogastropods
  └Littorinimorpha (Order)
   └Vermetidae (Family) Worm Snails
    └Thylacodes (Genus)
     └T. grandis (Species)
WoRMS ID: 732856🔗
iNaturalist ID: 1077718🔗

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© 2026 Florent Charpin