As a commercial wedding photographer, I know very little about how to take compelling underwater images. Luckily underwater photographer Brian Skerry and National Geographic have shared this short BTS video on what it's like diving with fish and swimming over coral reefs. I think it's interesting how simple but necessary the lighting setup is for this field of photography; most of us "land photographer" probably take for granted the complex lighting setups we can easily construct. Most of us also don't bring "backup gear" to our shoots because we expect our gear to break! Hopefully we will see more videos like this from other underwater photographers.