Location: British Virgin Islands
Florent's Guide To The
South Florida Reefs
Stiff Penshell
Atrina rigida
Stiff Penshell
Category: Pen Shells
Scientific Name: Atrina rigida
Size: Up to 11in. (28cm)
Depth: 6-50 ft. (2-15 m)
Distribution: Bahamas, Caribbean, Florida
Mollusca (Phylum)
└Bivalvia (Class)
└Ostreida (Order)
└Pinnoidea (Superfamily)
└Pinnidae (Family)
└Atrina (Genus)
└A. rigida (Species)
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© 2026 Florent Charpin