"Reef-safe" refers to products, particularly sunscreens, that do not contain harmful chemicals known to damage coral reefs and marine life. Common ingredients to avoid include oxybenzone and octinoxate, which can contribute to coral bleaching and disrupt the ecosystem. Using reef-safe products helps protect delicate underwater environments while still providing effective sun protection. Many brands now offer alternatives that use natural minerals like zinc oxide or titanium dioxide, which are less harmful to marine ecosystems. Choosing reef-safe options supports ocean conservation efforts and promotes healthier reefs for future generations.