Fish 'n Flag

Science  28 Nov 2003:
Vol. 302, Issue 5650, pp. 1511-1512
DOI: 10.1126/science.1092367

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Much interest has been directed toward understanding the biomechanics of swimming and flight, which require a large expenditure of energy. In her Perspective, Müller explores intriguing new findings ( Liao et al.) that reveal how fish are able to reduce muscle activity during swimming by exploiting the vortices generated as water flows around stationary objects.