A Stiff Pen sea shell, Atrina rigida, held in a hand at Sanibel Island, Florida, USA

---

The stiff pen shell, or rigid pen shell, is one of several species of pen shells. These mollusks have a long, triangular or wedge-shaped shell and attach to rocks or shells in sandy, shallow ocean bottoms

---

Size: 3648px × 5472px
Location: USA Florida
Photo credit: © gary corbett / Alamy / Afripics
License: Licensed
Model Released: Yes

Keywords: atrina, beach, combing, florida, island, pen, rigida, sanibel, sea, seashell, shell, shelling, stiff, usa