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Scoop.it!
"Using a mathematical model and the mackerel pectoral fin as an illustrative example, [...] researchers show how fin stiffness may be changed by applying a u-shaped curvature at the fin's base. The effect, the researchers say, might underlie the ability of fish to swim at widely varying speeds in all kinds of currents with great maneuverability. [...] The researchers say their model suggests intriguing possibilities for the design of robotic swimmers." 
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Scoop.it!
From
phys
Researchers at the U.S. Naval Research Laboratory (NRL) have taken inspiration from nature—from fish, in particular—to design and develop novel underwater propulsion, control, and sensing solutions for near-shore and littoral zone missions.
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