Study of jellyfish movement could help develop efficient propulsion systems of the future.
The find by a robot submarine could be a breakthrough in the investigation into an Air France plane that crashed in 2009.
The race is on to return to the ocean's deepest point -- and a submarine team says they have a new design that can withstand the pressure for multiple trips.
HydroBOB lets riders zoom around underwater and interact with a school of robotic fish.
British billionaire Richard Branson unveiled the Virgin Oceanic craft, which will be piloted to the deepest points in each of the world's five oceans.
The sheer clumsiness of the mission almost sounds like the makings of a screwball comedy.
The 28-foot-long, cigar-shaped sub will go where climate scientists can't -- under Antarctic sea ice.
A Japanese firm thinks that a fleet of subs pumping cold water into the path of a typhoon could stop the storm in its tracks.
James Cameron is building a special submarine that could not only net him the Ocean X Prize, but take him 7 miles deep into the ocean
Such a vehicle could open up a new area of aquatourism.