come down a little that i'm going to the right a see i'm underwater know a scientist and pilot john durban is tracking a mother and her calf from a distance of about three quarters of a mile out from where he stands john's wife and co researcher holly fernbach is under the towel that shades a control panel giving her a real time video feed that aids in guiding the flight so when they come up next i'm going to move out of the matter taking out markel but the very right adds to be perfect so now it's split second timing for john to remotely trigger the camera to take high definition photographs of the whales are going to be around the corner they went through there really quickly we got there we did well the. this is really a tool we have a flying a camera and we're trying to make inference about size and shape of whales by taking photographs of school photogrammetry so this is a camera and we want to get above the whales. mobley was built by don the boy at a cost of twenty five thousand dollars it may look like a hobby a stream project but in fact it's packed with many high tech systems to