Long story short, I did a discover scuba course and went into the open water with the DM with ZERO scuba diving experience (not even pool dives). We were 10 m into the water (I only found out after we surfaced) and started doing the hands-on exercises, such as clearing your mask, retrieving the mouthpiece, and blowing water out of the mouthpiece. Shouldn't we have done this at least in shallow waters?