Snorkel Gear

Possibly.

However, to get the fog off of the inside of your mask, you have to use either spit, not necessarily your own, or a commercial substitute. The commercial version is iffy at times.

Honestly, I wasn't going for the reaction, but the response of someone who snorkels/paddles/swims with their dogs daily, and wants to share! Sharing information is important, too.

It's wonderful being ocean people.