Packing sunscreen for a reef trip is about more than SPF. This guide compares Reef Safe Australia sunscreen options for reef-conscious travellers heading to the Great Barrier Reef, Hawaii, Palau, Thailand and beyond. It explains chemical UV filters, destination rules, why oxybenzone-free is not always enough, and why mineral-only zinc sunscreen offers a clearer choice for snorkellers, divers, families, boats and beach trips.