Why are full face snorkel masks dangerous?

How long can you breathe underwater with a full face snorkel mask?

In most cases, we don’t recommend diving underwater for any more than 2 minutes with a full face snorkel. Even if you are an experienced snorkeler who is going out in perfect conditions, we don’t recommend diving for more than 2 minutes.

IT IS IMPORTANT:  How many calories do you burn in a 1 hour water aerobics class?