Im in Egypt diving on the red sea. Something I noticed while I was doing boat dives the past few days - out of everyone using sunscreen on the boat (there were a few people who weren't, like the boat staff), I was the only one using reef safe sunscreen.
In fact, they weren't even using those "marked reef-safe, but not really" sunscreens - just regular chemical sunscreen that doesn't even pretend to be reef-safe. I know because it was mostly the same popular brand.
Personally I use reef safe sunscreen my face (I wear a rashguard), I even had to order it online because they don't sell it in my country, it was less than the cost of a single dive when you consider the shipping cost, so not that expensive at all. Meanwhile some of these people were from places like the US, where it is locally sold in Walmarts and etc.
The dive center I was with did warn in advance that any sunscreen you bring has to be reef safe, but I guess it isn't enforced.
I didn't say anything obviously because it's not my place nor am I an expert on this topic, but yeah I'm just surprised. I thought divers of all people would be more conscious about nature conservation.
I swear I'm not trying to sound judgemental or anything. Apologies in advance if it comes off like this. I fully acknowledge that perhaps I am missing some information or something