ABSTRACT The existence of turtles has long been threatened, both due to natural factors and human activities that endanger the population, so that turtles must be preserved one of them through the nesting site (nesting site) using sediment grain size (Ø). This research activity was carried out on 27 April-30 May 2019 in Tiram Beach, Karambia Ampek Beach and Gosong Beach, Padang Pariaman R…