New southern geographical records of intertidal sea urchins (Echinodermata: Echinoidea), with notes on abundance

Abstract

Ten species of epifaunal sea urchin were identified at Preslies Bay, Transkei, establishing new southern geographical distributions for seven of the species. Local distributions intertidally, subtidally, and within the Mtakatye estuary were documented. Estimates of abundance on the intertidal rocky shore indicated vertical separation between certain species.