Epitonium tenellumEpitonium tenellum, common name the small wentletrap, is a species of small ectoparasitic sea snail, a marine gastropod mollusc in the family Epitoniidae, the wentletraps.DistributionThis snail is found in shallow water in southeastern Australia and the North Island of New Zealand.DescriptionThe shell height varies between 10 mm and 20mm