My wife, daughter and some friends over the years have been reluctant snorkels due to nose/breathing issues they could never get over. Recently got this mask, and while NOT CHEAP, it changed their whole perspective - literally smile. Everyone loved this mask - it will be everywhere soon. In fact we saw a rental company at Maho Bay using them.

http://www.amazon.com/TRIBORD-Tribord-Easybreath-Snorkeling-Mask/dp/B00Z1WJA6C