My wife had an issue in class while underwater with her mask off and getting water up her nose.
Our instructor pretty much said if you cannot go under water with your mask off without holding your nose he cannot certify you. He worked with her in the pool a bit (we had 20-25 mask clears every pool session) and she was finally able to swim around while we were buddy breathing without masks. She wasn't comfortable doing it by any means but she was able to complete the requirement.
I can see very easily why this would be a good thing. You're not going to be holding your nose the instant your mask gets knocked off (haven't had this happen myself) and you would need to be able to control the water from going up your nose and freaking yourself out into doing stupid things.
Hey Klinc - kudos to your wife for pushing through! Maybe have her look at post no 18 from G1138 - seems like we may be able to practice on dry land a bit too and control our nose breathing I am sure I could have passed the underwater swim without holding my nose, it would have been tough but doable and now with everything that has been said on here I feel a tad cheated that I may have been given an "easy pass". I would have continued working on it in the pool till I could do it but after the instructor told me I could hold my nose ...
Well that seemed a reasonable fix at the time and I took it :easy: