Landcare Research - Manaaki Whenua

Landcare-Research -Manaaki Whenua

Guide to New Zealand's freshwater invertebrates


Most of the molluscs found in NZ streams or ponds belong to one of the groups shown below. When identifying snails, the terms “left-handed” and “right-handed” refer to whether the shell opening (“aperture”) is on the left or right side when the opening f