The Hawaii Senate is on track to pass a bill banning the use of sunscreens that contain oxybenzone, which studies have shown harms coral reefs.
Read more:
http://www.civilbeat.org/2017/03/ban-on-many-sunscreen-products-likely-to-pass-in-hawaii-senate/
https://www.scientificamerican.com/article/hawaii-seeks-to-ban-reef-unfriendly-sunscreen1