TIL about reef-safe sunscreen

TIL certain sunscreens are likely harmful to coral reefs. Wish I’d known this a month ago… Go for a physical sunscreen instead of a chemical one. Physical sunscreens can be less cosmetically preferable, need to be reapplied often, and can leave a white-ish cast, but they are usually gentler on skin and – here’s the kicker – are much less likely to kill oceanic critters.