It's hard to compare lessons in a pool to real diving. When I dive 81 degree water, I usually use only a 0.5 mm suit--mostly for exposure protection, not warmth.
In contrast, when I teach a pool lesson, I wear a 3 mm shorty in our 87 degree pool water. [We keep it warm because we also do infant swim classes.] A couple of weeks ago, I started getting cold, and we saw that the pool temperature had plunged to 84 degrees. I was chilled.
I once taught for another group that used a conventional swimming pool. We were all wearing full 33 mm suits. Every now and then, we all got out and got into the hot tub to warm up.
In contrast, when I teach a pool lesson, I wear a 3 mm shorty in our 87 degree pool water. [We keep it warm because we also do infant swim classes.] A couple of weeks ago, I started getting cold, and we saw that the pool temperature had plunged to 84 degrees. I was chilled.
I once taught for another group that used a conventional swimming pool. We were all wearing full 33 mm suits. Every now and then, we all got out and got into the hot tub to warm up.
