What we do to the coral reefs.

Coral reefs give us benefits and we take them for granted. What do we do to them? Let's see...

Overfishing: In areas blessed with an abundant human population, the collapse of the world's fisheries is a familiar story, and tropical regions are just another chapter. Coral reef fisheries are hitting bottom in many regions, especially in South and East Asia, where many overexploited reefs have been scoured of nearly all edible life.
Blast fishing: In depleted fisheries, people resort to desperate tactics to catch the fish that remain—one of those is dynamite. The explosions send dead fish to the surface and destroy living reefs; they can be heard from the Philippines to Kenya to the Caribbean. That's worser.
Cyanide fishing: Restaurants and markets, especially those in East Asia, like to buy live fish; fishermen oblige them by stunning big fish with cyanide sprayed into the water. The fish are caught live, the market momentarily sated, the coral reefs killed-which is not fair to them.
Sewage: Organic wastes from human cities flood to the sea, bringing an overload of nutrients; algae take over the reefs, blotting out the sunlight corals need to live. It's called eutrophication and it's a major problem, especially in the Caribbean and Central America, where just 10 percent of sewage is properly treated before it's dumped in the sea.
Farm runoff: More eutrophication. Carried to the sea by rivers and streams, chemical fertilizers act much like sewage, overloading reef areas with nutrients for algae, choking the corals. Herbicides and pesticides are a toxic bonus. Florida is a prime example, great example.

There are more in the next post.

Source: Action Atlas