In this study, the settlement and growth of the Mediterranean mussel, Mytilus galloprovincialis, was monitored from September 2002 to February 2004 in Kilya Bay, Dardanelles. Water temperature ranged between 8.3-25 degrees C, the average chlorophyll-a was 0.70 mu gL(-1). The mussel abundances on the ropes in Kilya Bay, indicated the highest density of mussels in November 2002 (14184 ind. 0.25 m(-1)) and March 2003 (15485 ind. 0.25 m(-1)) and lowest in February 2004 (3713 ind. 0.25 m(-1)). Settlement was significantly different between samplings (P<0.05). At the end of 18 months. 91.36% of spat on rope was smaller than 2.8 mm. The highest percentage of length class was 1.5-2.79 mm with 40.26%. Even though mussel size reached a maximum of 55.7 mm, their density was very low, 0.20%.