Robotic Turtle Proves Graceful

Madeline the robot turtle cruises in the pool.
(Image credit: John Long)

Madeline the robot turtle is helping university researchers learn how to build better autonomous underwater vehicles. Madeline's flippers are made of polyurethane, but have about the same stiffness as those of a real turtle; electric motors guided by an onboard computer provide power.

The basic approach is summed up by John Long, one of Madeleine's makers from Vassar College, in New York. "The thinking is that if nature did it, it must be good," he explains.

Bill Christensen catalogues the inventions, technology and ideas of science fiction writers at his website, Technovelgy. He is a contributor to Live Science.