I learned a long time ago that it's about technique, not the equipment. Let me start by saying splits are hard... But if you know the techniques, underwater photography isn't any harder than any other disciplines in photography. I shot this on a D810 more than a few years ago at a sandbar just off Stingray City in Grand Cayman. My team and I got up around 4 am to drive across the island and catch a boat before the sun came up. When we made it out to the sandbar, I used PhotoPills to check exactly where the sun was coming up and hopped in the water. Almost immediately we started seeing stingrays and nurse sharks, I started shooting in the direction that I knew the sun was coming up. After several shots that were mediocre and the sun was up, I had one stingray come up and turn to the left raising is right pectoral fin almost looking like he was giving a high five. I was shooting a Nikon D810, 18-33mm with a Ikelite housing, 2 Sea&Sea strobes. Settings F8, 1/125th, iso100, 18mm.