The Assimineidae are a family of amphibious microgastropods that can be mostly found in estuaries and mangroves in South Africa. These snails often occur in great numbers and are ecologically important to the St Lucia Estuary. which forms a crucial part of the iSimangaliso Wetland Park. a UNESCO World Heritage Site. https://www.eleanorscholz.com/product-category/kegel-balls/