So I live most of the time in Costa Rica, and a lot of the surfers here actually just use pretty much straight zinc oxide diaper rash cream (We call it "Pañalit

So I live most of the time in Costa Rica, and a lot of the surfers here actually just use pretty much straight zinc oxide diaper rash cream (We call it "Pañalito" which means little diaper) and when you have it all over your face you look like a ghost for a bit. They prefer it because it's WAY cheaper than sunscreen on the beach (They charge it like 20$+ for a bottle to get tourists who just unflinchingly pay that kind of price), so I actually spend a lot of time wondering about the topic in this link. My concern is a lot around the effect this may have on the environment, because they're probably the people who are spending the most time out in the ocean. We all talk like it's better for the fish somehow but this study might be evidence to contradict that.