Couldn't find an enviroment forum.
Sometimes it is best to leave nature alone or even protect it. Destroying it can backfire badly.
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Coral, mangroves good for economy
Coral reefs and mangroves are worth protecting for economic reasons, contributing as much as $1m per sq km to tropical economies.
That is the conclusion of a new United Nations report which calculates the value of reefs and mangroves to fishing, tourism and coast protection.
Intact mangroves protected areas of coastline during the 2004 Asian tsunami, reducing the death toll.
Reefs are under threat from pollution, overfishing, and ocean acidification.
http://news.bbc.co.uk/2/hi/science/nature/4646166.stm
Edit [Moderator]: Moved to Wilderness, Wildlife & Ecology.