Florent's Guide To The

Tropical Reefs

Milk Conch
Macrostrombus costatus
Milk Conch
Category: True Conchs
Scientific Name: Macrostrombus costatus
Synonyms: Strombus costatus, Lobatus costatus, Aliger costatus
Size: 4 to 6 in. (10 to 15 cm)  
Depth: 3-40 ft. (1-12 m)
Distribution: Caribbean, Bahamas, South Florida
Mollusca (Phylum) Mollusks
└Gastropoda (Class) Gastropods
 └Caenogastropoda (Subclass) Caenogastropods
  └Littorinimorpha (Order)
   └Strombidae (Family) True Conchs
    └Macrostrombus (Genus)
     └M. costatus (Species)
WoRMS ID: 1429775🔗
iNaturalist ID: 1164244🔗

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© 2026 Florent Charpin