The Guardian: Australia creates world's largest marine reserve network

Australia has created the world’s largest network of marine reserves and will restrict fishing and oil and gas exploration in a major step to safeguard the environment and access to food.
The area will cover 3.1m sq km (1.2m sq miles) of ocean including the entire Coral Sea, and encompass a third of the island continent’s territorial waters.
http://www.guardian.co.uk/world/2012/jun/14/australia-largest-marine-reserve