Understanding the Hidden Impact of Sunscreen on Marine Life In order to preserve the Corals and the marine life around it, we recommend using when possible, n atural sunscreen alternatives that can effectively protect you from the sun's harmful UVA and UVB rays. Sunscreen can indeed have a significant impact on coral reefs. It is now well-established that certain chemicals found in sunscreen and other personal care products can be harmful to coral ecosystems. These chemicals