I usually start my mask clearing looking down, otherwise water gets in my nose. And not just a little bit, a lot (Hey, I have a big nose!). It's not that I mind water in my nose, but enough gets in there to cause some kind of reflex that closes my throat. I never had that problem in the pool, so it's either a) worse with saltwater, b) worse with 50 degree water, or c) who cares .
.
.