Oxybenzone, a common chemical found in sunscreens, interferes with skeletal formation in larval corals. This leads to eventual bleaching of the baby corals, since oxybenzone is a skeletal endocrine disrupter.
>> Toxicopathological Effects of the Sunscreen UV Filter, Oxybenzone (Benzophenone-3), on Coral Planulae and Cultured Primary Cells and Its Environmental Contamination in Hawaii and the U.S. Virgin Islands. Downs et al. 2015.