A friend of mine is working on two or three documentaries about marine life. He is a very passionate diver and really loves to share his passion. You can watch his previous videos on his Dailymotion Channel.
His first trip is to the Maldives, where he will be filming Manta Rays. I worked using Blender on a shot that explains the travel and the location.
You can see on the following video, various iterations of this shot: