Cavern has, by and large, by most agencies, been moving in the direction of being more of a recreational-level safety class. This rather...

Sometimes challenges as an instructor come from the unlikeliest places. Student I know. Pretty well. Worked with them before. I know...

I don't know why I never thought of it before. Wanted to get a lost diver drill done on this morning's dive. But during our exit (when I...