Figure 5.

Contours of the x-component of velocity in front of the mouth of a suction feeding event without prey (a), with a 10 mm diameter prey (b), with a 1 mm diameter prey (c) and with a 5 mm diameter prey (d). The prey is located 1 gape distance from the centre of the mouth. Significant deviations in the contour lines are observed for the larger prey sizes. Allowing the prey to interact with the flow creates a region of recirculation behind the prey, which affects the forces exerted on the prey (A = 0.090, B = 0.393, C = 0.697, D = 1.000).