The largest ray in the world (up to 8m wide!), the giant manta is a graceful and gentle creature. They can make migrations across the oceans, finding their way by following topographical maps ...

Such missions don’t require human-present logistical assistance or maintenance. According to DARPA, the Manta Ray initiative aims to demonstrate key technologies for a new generation of long ...

Manta Ray was built through the U.S. Department of ... buoyancy-driven gliding' and could reduce need for as much human ...