When we arrived on the beach one morning, I reached for my trusty La Roche-Posay bottle. Brandon asked me if we had any reef-safe sunscreen, and I am embarrassed to say I had no clue what he was talking about. I’d never even heard of such a thing, and I am someone who buys and invests in sunscreen frequently. I shook my head, and proceeded to slather on the cooling French SPF. I thought about it more as I sat in the water for almost an hour. How many people are there swimming in an ocean right this minute? How many of those people will swim more than once in that same day? Are all of them wearing sunscreen? Is all of that sunscreen washing off into the ocean?