How To Measure a Shark (Safely) [Monster Machines]

Measuring a shark. You could do it by catching one and holding up a tape measure from its fin to its head. Or you could use a camera and keep some distance between yourself and jaws. That's what Dr Mark Meekan and Gabriel Vianna are doing in the shark sanctuary at Palau: Using two cameras mounted in a rig, a diode used to sync video frames, and the geometry between them to measure the sharks from afar. More »

josh hamilton jp morgan thomas jefferson