Shoutout to double-checking your dive mask seal
I mean, my partner's a commercial diver and he used to rush through his gear check without testing his mask. After a job where his mask leaked and messed up his visibility, we talked about making it a must-do step. Now he always spends a minute to seal it on his face before suiting up, and it's cut down on mid-dive issues. Idk, maybe it's just me but that small habit change made a big difference in his day.