Unmanned aerial vehicles are already trained to move along walls, not to be afraid of fire, and also taught not to be afraid of water. With the financial support of the US Navy, Rutgers University is developing an amphibious drone that can dive to depth to collect information about the object of study (this may be the underwater part of the bridge, ship, etc.). Data transmission in real mode is still carried out via an attached wire, since radio signals in water pass poorly. Engineers from Auckland University are also working on a similar apparatus. Their development, called Loon Copter, is a drone that can fly, swim on the surface of the water, move under water, and so on. While the prototype is remotely controlled and can be immersed several meters. Video materials taken during the dive are transmitted only after the device is on the surface of the water. According to scientists, this defect can be eliminated by using acoustic modems and relay buoys in the future, which will allow the operator to receive video materials in real time, as well as remotely control the drone. The developers believe Loon Copter can be used for search and rescue operations, inspection of underwater structures and pipelines and studying the life of marine life.