Stiff Pen Shell (GTM Research Reserve Mollusc Guide) · iNaturalist

Sawtooth Pen Shell (Gulf Islands National Seashore Sealife

Thalassionema (GTM Research Reserve Plankton Guide) · iNaturalist

Monoplex nicobaricus - Gastropods by Eddie Hardy

Tennessee Heelsplitter

Sachem (GTM Research Reserve Butterfly Guide) · iNaturalist

Skeletonema (GTM Research Reserve Plankton Guide) · iNaturalist

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

Sawtooth Pen Shell (GTM Research Reserve Mollusc Guide) · iNaturalist

Monoplex nicobaricus - Gastropods by Eddie Hardy

Minor Jackknife Clam (GTM Research Reserve Mollusc Guide

Sundial Charters - Stiff Rigid Pen Shell(Atrina rigida) My wish