Northrop Grumman's massive Manta Ray underwater test bed completed at-sea trials this year, validating its ability to operate below the waves and with minimal human contact. In a photo first ...

Alex Mustard For a reef manta ray like this one swooping in the Indian ... “It’s a species that doesn’t have any way of adapting to survive human pressures,” says Joanna Harris, a ...

"By mimicking the manta ray's fluid silhouette, we've solved buoyancy and stability issues that plague humanoid underwater robots," said Fan Dixia, 35, the project's principal investigator.

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 ...