Investigations were conducted on the hinge length meat weight relationship in Anadara antiquata (Linnaeus 1758) collected from the mud flats of Zanzibar, between July 1987 and February 1988. A hinge length frequency distribution with a clear mode at 2.4 cm was observed in a total sample of 980 bivalves used in the investigation. The meat weight frequency distribution was positively skewed and had a peak at 2.2 g. Meat weight and hinge length had a correlation coefficient of 0.9852 and were related by the exponential curve equation : W=0.23676 L ^3.1591 where W=meat weight, L= hinge length. Meat weight was also found to vary with time.