If you are very low or out of air or distance to exit point is too far?
I just came out of a dive an hour ago. Should I have swam the 600 meters out using my air from tank to swim out? Same for coming back?
I don't know why this is such a hard question. I am perfectly comfortable on the surface breathing air without a snorkel. Sure, I could use a snorkel. I don't really like to. I'd rather either breath off the reg or kick on my back and breath the air over my head. You choose to use a snorkel. Awesome. Do that. I don't. Neither of us is right or wrong.