Hello Reader, I’m sure you’ve noticed that, over the past few months, I have become addicted to the underwater world, and to photographing the creatures, large and small, that I encounter there. It’s not the worst addiction in the world. There are far more harmful obsessions. Like writing, it’s good for you. Creativity strengthens our well-being; it makes us healthy in mind and our emotional selves. I began with a very entry-level camera, which made no concessions to my struggle to keep it...