Is your sunscreen damaging coral reefs?

When you are purchasing and applying sunscreen for yourself and your little ones, what are you thinking about? Are you thinking about the amount of sun protection from the harmful ultraviolet A and B rays? Are you thinking about whether it is protecting you from skin cancer? We hope so. But are you also thinking about the impact your sunscreen has on the environment? More specifically, the destruction that chemical sunscreens have already caused coral reefs.