Fig. 1. Flume set-up. The experimental set-up consisted of the Recirculating Wave-Current Flume (RWCF) set to produce either 5 cm s^-1 unidirectional flow or 0.5 Hz waves with a velocity range of -5 cm s^-1 to 9 cm s^-1 at a height of 2 cm, the height of the stomatopod antennules. A laser light sheet fluoresced the rhodamine-spiked odor plume, so that the structure of the odor plume could be recorded by the two planar laser induced fluorescence (PLIF) cameras filming through the bottom of the flume and the top camera filming through the water's surface.