When starting out taking a camera underwater, you are adding an additional task load to your diving. Because of this setting the camera to Auto and just taking snaps to start off with isn't necessarily a bad thing. But what you'll find is that often your pictures won't look as good as you'd like them to.
In part two of my musings I mentioned using a snoot to manipulate strobe lighting while taking underwater macro shots. In this blog I'm going to cover them in some detail.
In part one of my macro musings I talked about what macro is and a bit about macro lenses. Lets move on to a common question from would be underwater photographers.