Archives for January 2016

Cover Up for Coral Reefs

Coral reefs have been in the news lately for all the wrong reasons: island construction projects that are burying reefs, El NiƱo causing coral bleaching, and the risk to corals from carbon pollution. So it was unwelcomed news when we learned in October about a new study, Archives of Environmental Contamination and Toxicology, that shows a common ingredient in sunscreen, oxybenzone, is bad for corals. Even at very low concentrations, the growth rate of baby corals exposed to oxybenzone slowed down and they became deformed. When the concentration was increased, baby corals bleached, which caused them to release their food-generating symbiotic algae. Scientists are just starting to understand how chemicals like sunscreens can harm corals. The current study is an important step forward, but we expect to learn more about the effects of oxybenzone on corals in the years to come. We will also learn about how a myriad of chemicals are … [Read more...]