When swimming or snorkelling be careful never to stand on or even touch corals (the slightest contact will harm them and their rate of growth is extremely slow).
Wear sun protective clothing instead of applying sunscreen (studies have shown that sunscreen containing oxybenzone damage juvenile corals and cause coral bleaching by promoting viral infections). Use sunscreen containing titanium or zinc oxide instead.
Stay horizontal in the water while you are near or above the reef. Keep your fins up and away from the fragile coral.
Avoid kicking up sand which may settle on the coral and reduce the light available for the coral to photosynthesis it’s required energy
Take nothing living or dead from the water except for recent garbage.
If you feel uncertain in the water, wear a life vest for added buoyancy.
Avoid purchasing coral souvenirs and souvenirs made from other sea life.
Avoid eating unsustainable seafood (overfishing is the greatest threat to ocean ecosystems including coral reef ecosystems).
Reduce green house gas emissions as often and as much as you are able. (Warming seas and ocean acidification, the results of global climate change, threaten the health, growth and survival of coral world-wide. Reducing emission of green house gases like carbon dioxide and methane will aid in the global movement to keep warming under 1.5⁰ C.)