Bang on Peahi.
Some of the old surfing diggers when I was young that lived shirtless in the sun their whole lives, that have passed on now, didn't die of skin cancer. So this so called " Doctor" is spreading a bit of doom and gloom saying no matter what you do you WILL get cancer if you do water sports.
Some who spend little time in the sun get melanoma , hereditary factors play a major factor.
There have been tests done on mice, exposing them to UV, then using moisturizer on some and none on others. The ones they moisturized had a higher rate of melanoma





, but tests haven't been done on humans as yet.