Section through the cup-shaped eye of a gastropod. Labels: e, epithelium covering body; cv, vitreous body; R, retina; N, nerve.

Eye of Gasteropod

Section through the cup-shaped eye of a gastropod. Labels: e, epithelium covering body; cv, vitreous…

"Hermit crab in the shell of a Gasteropod." — Galloway

Hermit Crab

"Hermit crab in the shell of a Gasteropod." — Galloway

A spiral univalve shell.

Univalve shell

A spiral univalve shell.

"Whelk is a popular name for a number of marine gasteropods, and especially applied to species of Buccinum common on the coasts of Northern seas. The well-known common whelk is often dredged for bait or as food for the poor. It occurs from low water to a depth of about 140 fathoms, and burrows in the sand for bivalves, on which it feeds."—(Charles Leonard-Stuart, 1911)

Egg of Common Whelk

"Whelk is a popular name for a number of marine gasteropods, and especially applied to species of Buccinum…