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Pastimes : I Love to Fish

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From: Snowshoe	9/5/2014 7:45:05 PM
	of 1412

Archerfish target shoot with 'skillfully thrown' water sciencedaily.com Those studies showed that the time needed before water masses up at the jet tip isn't fixed. Rather, archerfish make adjustments to ensure that a nice drop of water forms just before impact. Surprisingly, the researchers report, the fish achieve this by modulating the dynamics of changes in the cross-section of their mouth opening. The timing adjustments that archerfish must make to powerfully hit their targets over an extended range are surprisingly comparable to the "uniquely human" ability of powerful throwing, the researchers write. "One of the last strongholds of human uniqueness is our ability to powerfully throw stones or spears at distant targets," Schuster says. "This is really an impressive capability and requires -- among many fascinating aspects -- precise time control of movement. It is believed that this ability has forced our brains to become bigger, housing many more neurons to afford the precision. With the many neurons around, they could be used for other tasks apart from applying them for powerful throws. It is remarkable that the same line of reasoning could also be applied to archerfish."

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