Aqua2 is an amphibious six-legged robot. It's designed for applications involving dive assistance, environmental monitoring, and locomotion research.
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Aqua's flippers move independently, enabling it to move forward, backward, up, down, and sideways; it can also perform somersaults and rolls.
The initial Aqua robots were designed by Gregory Dudek at McGill University, in Montreal, in collaboration with teams led by Michael Jenkin at York University, in Toronto, and Evangelos Milios at Dalhousie University, in Halifax, Canada. Their first Aqua design, based on RHex, a six-legged walking robot developed by U.S. and Canadian researchers in a program sponsored by DARPA, was unveiled in 2004. Aqua has been tested in real underwater environments in Barbados and Nova Scotia, where scientists used the robot to assess the health of coral reefs and other marine life. A commercial version of Aqua is currently offered by Independent Robotics.