海蛳螺科（学名：Epitoniidae）。软体动物门腹足纲异腹足目下的一科。代表物种有绮蛳螺等

Wentletraps are small, often white, very high-spired, predatory or ectoparasitic sea snails, marine gastropod mollusks in the family Epitoniidae.

The word wentletrap originated in Dutch (wenteltrap), and it means spiral staircase. These snails are sometimes also called "staircase shells", and "ladder shells".