Mineral sunscreen that helps prevent sunburn — and is formulated to be safer for aquatic life. Our zinc oxide is non-nano, naturally-coated, and USP-grade. Not all zinc is created equal, and ours is the only zinc we've identified to pass aquatic toxicity testing. Non-greasy, gentle on sensitive skin, and it won't burn your eyes. Toss one in your beach bag, dive kit, or pocket... and protect what you love above and below the surface, with Stream2Sea.