Best environmental practice for sun protection is to cover up with clothes instead of sunscreen. A long-sleeved UV rashguard and hat are ideal, or a non-oxybezone sunscreen recommended by Environmental Working Group, like Stream2Sea.
Our neighbour, Bonaire, has joined Hawaii in approving a ban on sunscreen products containing oxybenzone, committing to be oxybenzone and/or octinoxate-free by January 1st, 2021.
There's no need to wait for the ban - just don't buy or use it.