When most of us think about how drones are used, the first thing that usually comes to mind is filmmaking and aerial photography. But, these handy little flying machines can be used for a lot more things than just that, including assisting in conservation efforts. This video provides one example of just that, as drones are used to spot whales who have become entangled in debris in the ocean and are rescued from those predicaments. It is a wonderful use of technology to help these gentle giants of the ocean to survive.