A recent study has shown that the dermal denticles of Squalus acanthias are shaped differently on the dorsal and ventral surfaces of the pectoral fins. Earlier studies have also revealed that the fins of sharks play an important role in propulsion and maneuvering. The primary focus of my work is to determine if the different denticle morphologies of the dorsal and ventral surfaces on the pectoral fins provide the shark with lift. Pectoral fins will be removed from euthanized specimens of S. acanthias. The removed pectoral fins will be placed in a recirculating flow tank at specific orientations characteristic to steady swimming of S. acanthias. DPIV will be applied to fins with covered and exposed denticles for comparison of particle movements. This specific approach will determine if the denticle arrangement generates lift. Up-scaled models of the dorsal and ventral pectoral fin denticles will also be prepared for DPIV. The DPIV on the up-scaled models may illustrate particle flow among individual denticles. This specific approach may tell us how the differently shaped denticles generate (or don’t generate) lift.