Hybrid aerial hydro drone

A hybrid aerial hydro drone comprising:

• an ovoid-shaped streamlined fluid-tight body which facilitates aerodynamic and hydrodynamic traversal and defining an internal cargo space accessible via a sealable hatch;
• four hydraulic thrusters circumferentially spaced about an outer surface of the ovoid-shaped body and configured to propel the body in a marine environment, each hydraulic thruster arranged on a quadrant of said ovoid-shaped body to facilitate controlled marine propulsion;
• and
• a plurality of rotor arms arranged on the body, each rotor arm comprising a rotor system configured to propel said body in an aerial environment, each arm deployably configured between a deployed position in which the rotor systems are extended from the body for aerial traversal, and a folded position in which the arms are hydrodynamically folded behind the body for submerged marine traversal;
• wherein the body includes a controller, an energy source, a main ballast chamber and a pump, said controller configured to:
• for aerial traversal, actuate the rotor arms into the deployed position, operate the pump to discharge liquid from the main ballast chamber and control the rotor systems as required for controlled flight;
• and
• for marine traversal, actuate the rotor arms into the folded position, operate the pump to charge the main ballast chamber with liquid and control the hydraulic thrusters as required for submerged marine traversal.