"There is still lots of fishing pressure on Pickle's Reef, " Akins said.

CNN: Counting fish adds up for marine protection

In a place threatened by illegal fishing and overfishing, this unique stretch of reef helps promote natural biodiversity.

BBC: Belize��s lessons in eco-tourism

The reef has been decimated in parts by dynamite fishing, but you will still find a huge amount of underwater life, with a smorgasbord of cuttlefish, octopus, pygmy seahorse, scorpion fish, clownfish and giant green turtles.

BBC: Derawan Island and the Sangalaki Archipelago

By preserving the reef, the project also aims to protect the fishing industry that has dominated the local economy for generations, says Richard Nimmo, managing director.

WSJ: Voluntourism: Doing Good on Vacation

Peter Mumby of the University of Exeter, in England, and his colleagues looked at how the ecology of a coral reef in the Bahamas changed following the banning of fishing in 1986.

ECONOMIST: Fishing (I)

The project, run by community group Wreck to Reef, aims to boost lobster stocks to help the fishing industry.

BBC: Barge with Portland stone

The project looks at four main threats to coral reefs -- marine-based threats, over-fishing, coastal development, and land-based sources of pollution -- in six main coral reef regions.

CNN: Could online maps save coral reefs?