Prosobranchia mollusc shell. Coloured scanning electron micrograph (SEM) of the shell of a prosobranchia mollusc. The prosobranch molluscs are a type

---

Prosobranchia mollusc shell. Coloured scanning electron micrograph (SEM) of the shell of a prosobranchia mollusc. The prosobranch molluscs are a type of gastropod (snail), and most of them are found in the sea (marine gastropods). Like all gastropods, most prosobranchs have spiral-shaped shells. Common prosobranchs include conches, limpets, periwinkles, and whelks. The shell is typically formed from a calcium-based mineral. It protects the soft body of the mollusc inside. The successive spirals grow as the mollusc increases in size. The opening of the shell is at lower left.

---

Size: 3142px × 4051px
Photo credit: © SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1, animal, biological, biology, calcium, coloured, conch, cut, cut-, cutout, false-coloured, fauna, gastropod, hard, invertebrate, invertebrates, marine, mineral, mollusc, mollusca, nature, periwinkle, prosobranch, prosobranchia, protection, protective, seashell, sem, shell, single, spiral, symmetry, whelk, wildlife, zoological, zoology