If all the proposed port expansion plans go ahead, the Reef may become a shipping superhighway, with up to 7,000 ships crisscrossing the Reef every year.
Currently, over 4,000 bulk carriers pass through the Great Barrier Reef each year.
But there are plans to have up to 7,000 ships using the Reef in coming years.
Just one collision, one mistake or one spill could result in an environmental catastrophe in the Great Barrier Reef, one of the seven natural wonders of the world.
When the massive coal carrier Shen Neng 1 crashed into the Reef in 2010 it left a 3 km scar and the coral has yet to grow back.
Not only do shipping accidents risk the Reef, they are terrible for tourism.
No one wants to see ship after ship when they have paid to come and see the natural beauty of the Great Barrier Reef.
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