I needed a biodegradable, reef-friendly sunscreen for snorkeling in Mexico, and this one got the highest recommendations from environmental groups.Pros:- The spray makes it easy to use, especially for your back or hard-to-reach areas- It's basically odorless--a pleasant change from most sunscreens which smell awful- It goes on dry, not sticky like most sunscreens, and doesn't make you shiny- It stays on forever, including in the water. As in, even after showering after being in the water most ofSee full review