New research into how fish use fins for swimming
The study, conducted by Brooke Flammang and colleagues from Harvard’s Museum of Comparative Zoology and TSI Incorporated, is to be published in a forthcoming issue of the journal Biology Letters.
The authors used a volumetric velocimetry imaging system via lasers to obtain an instantaneous three-dimensional view of the wake of a swimming fish as a basis for their research.
Scientists have previously thought that the caudal fin of the fish provides the main propulsive force while swimming, with the dorsal and anal fins acting as stabilisers. However, the results of the study showed that the movements of the dorsal and anal fins contribute significantly to the caudal-fin wake, implying that these fins are not merely acting as stabilisers, but function as additional propellers.
Category: Science & Technology
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