Table 1.

Comparison of fluid dynamic forces acting on the fish in the simulations with (factual simulation) and without wake interception (force-effect simulation). Forces are expressed in the fish frame-of-reference. The anterior body force is the force acting on the part of the body anterior to the CoM. See text for further explanation.

stage	direction	average anterior body force (10−6 N)			average total force (10−6 N)
		I factual simulation	II force-effect simulation	III = I–II difference	IV factual simulation	V force-effect simulation	VI = IV–V difference
2 (14–24 ms)	Xfish	4.79	5.93	−1.14	−5.94	−4.64	−1.30
	Yfish	−7.78	−7.69	−0.09	1.17	1.15	0.02
3 (24–36 ms)	Xfish	−3.50	−3.07	−0.43	0.33	1.02	−0.69
	Yfish	−3.54	−3.80	0.26	−0.32	−0.67	0.35