Amongst molluscan shell from the Emily Bay site were 40 specimens of fragmented bivalves, especially of Gari livida, which were examined for evidence of their use as artefacts. Experiments using modern specimens of the same taxa showed that it was impossible to define deliberate breakage sufficiently clearly to define shell tools on that criterion. Analysis of usewear by microscopic inspection of edges was the main discriminant adopted. In addition vegetable residues were identified on several edges. These means identified 19 pieces as tools, which had been used mainly for scraping soft materials. Two other tools were identified by morphology. A small assemblage of bone and marine ivory artefacts was also recovered from Emily Bay. Most were pieces of fishing gear.