The Department of Land and Natural Resources is reminding all beachgoers to use sunscreens safe for coral reefs.

State officials are handing out cards and putting up signs saying to use only zinc or titanium oxide sunscreens. 

Other chemicals like oxybenzone found commonly in sunscreens can cause deformities in coral larvae and increase the rate of coral bleaching. 

Officials say researchers found more than 30 times the level of that chemical considered safe for corals. 

Officials acknowledge that sunscreen is not the only thing damaging coral reefs -- but the change is a start.