Sawtooth Pen Shell (Marine Invertebrates of Jekyll Island, GA) · iNaturalist

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

Photos of Cart-Rut Shell (Dicathais orbita) · iNaturalist

A Needle in a Coastal Haystack

Photos of Amber Pen Shell (Pinna carnea) · iNaturalist

Non-native molluscan colonizers on deliberately placed shipwrecks in the Florida Keys, with description of a new species of potentially invasive worm-snail (Gastropoda: Vermetidae) [PeerJ]

Photos of Helvella atra · iNaturalist

Sawtooth Pen Shell (Marine Invertebrates of Jekyll Island, GA) · iNaturalist

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

Photos of Sawtooth Pen Shell (Atrina serrata) · iNaturalist

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

Coquimbo Check List · iNaturalist

Photos of Amber Pen Shell (Pinna carnea) · iNaturalist

Atrina serrata, 30 November 2013 (ii) – floridensis