A huge problem for the drones that you can get on the market today is water.
Not only rain will cause damage on all popular models but also a crash into water would destroy any drone almost completely.
Many producers are developing waterproof drones to fly in rain but the UAV (called: Naviator) developed by Rutgers University New Jersey researchers is something different.
It´s not just waterproof but it can also move under water without any damage at all. This engineering progress enables a huge spectrum on new application possibilities.
It remains to be seen what exciting new features and models the drone industry will bring up in the future.