Spit in your mask is the best and least expensive defogger there is. It was the earliest defogger known to diving man.

It won't cause fungus to grow, if one cleans their mask now and then.

A little pee never hurt a wetsuit but holding it in has hurt some kidneys/bladders. Nothing worse than having to go, cuz one didn't take advantage of the opportunity whilst still in the water and now the boat is going wham wham wham all the way back to shore. Shudder.


A fish and a bird can fall in love, but where will they build their nest?