This study considers exploitation of marine molluscs at Riparo Mochi (Italy) in cultural and ecological context. Five shell assemblages from this site represent the early Upper Palaeolithic (c. 36,000 BP) through Late Epigravettian (c. 9000 BP) periods. Taphonomic analysis reveals four kinds of shell debris: ornaments, food refuse, marine sponge inclusions, and land snails. While human foraging agendas at Riparo Mochi shifted over the five Palaeolithic phases, the kinds of marine shells favoured as ornaments remained nearly constant.