Just off the coast of Orange County, California - where I did my flight training many moons ago - a fantastic "stampede" of dolphins has been filmed with a drone. And you'll see some very close up footage of a whale and calf...
Filmed by Capt Dave from DolphinSafari.com with a DJI Phantom and GoPro. He lost one Phantom in the process but the end result is truly amazing!
Have look here.