Engineers are designing, building mechanical ray (w/ Video)
Tuesday, July 24, 2012 - 08:01
in Astronomy & Space
(Phys.org) -- Batoid rays, such as stingrays and manta rays, are among nature's most elegant swimmers. They are fast, highly maneuverable, graceful, energy-efficient, can cruise, bird-like, for long distances in the deep, open ocean, and rest on the sea bottom.