References
http://en.wikipedia.org/wiki/Great_Barrier_Reef
http://www.greatbarrierreef.org/great-barrier-reef-facts.php
http://www.wwf.org.au/our_work/saving_the_natural_world/oceans_and_marine/priority_ocean_places/great_barrier_reef/
http://fightforthereef.org.au/
http://www.wwf.org.au/our_work/saving_the_natural_world/oceans_and_marine/priority_ocean_places/great_barrier_reef/threats/
https://www.google.com.au/search?q=images&es_thegreatbarrierreef/join-tourshttp://sitemaker.umich.edu/gc2sec7labgroup3/pollution
http://en.wikipedia.org/wiki/Environmental_threats_to_the_Great_Barrier_Reef
http://www.gbrmpa.gov.au/about-the-reef/how-the-reefs-managed/water-quality-in-the-great-barrier-reef
http://www.greatbarrierreef.com.au/information/great-barrier-reef-threats/
http://www.skwirk.com/p-c_s-57_u-464_t-1263_c-4815/qld/sose-geography/the-great-barrier-reef/the-great-barrier-reef/human-threats-to-the-reef
http://fightforthereef.org.au/risks/dredging/
http://www.gbrmpa.gov.au/__data/assets/pdf_file/0020/28811/Ports-and-Shipping-Info-Sheet-4-Shipping-May-2013-update.pdf
http://en.wikipedia.org/wiki/2010_Great_Barrier_Reef_oil_spill
http://www.gbrmpa.gov.au/outlook-for-the-reef/climate-change
http://australia.gov.au/directories/australia/gbrmpa
http://www.greatadventures.com.au/great-barrier-reef-info.html
http://www.brisbanetimes.com.au/queensland/two-bombs-to-remain-on-great-barrier-reef-20130901-2symu.html
http://www.couriermail.com.au/news/queensland/two-bombs-dropped-by-us-marines-over-the-great-barrier-reef-retrieved-two-8220inert-ordnance8221-remain/story-fnihsrf2-1226708549468
http://www.gbrmpa.gov.au/about-the-reef/animals/crown-of-thorns-starfish
http://www.gbrmpa.gov.au/outlook-for-the-reef/Managing-multiple-uses/ports-and-shipping
http://www.qm.qld.gov.au/microsites/biodiscovery/05human-impact/pollution-and-other-factors.html
http://gbrthreats.blogspot.com.au/2010/03/overfishing-in-reef.html
http://www.greatbarrierreef.org/great-barrier-reef-facts.php
http://www.wwf.org.au/our_work/saving_the_natural_world/oceans_and_marine/priority_ocean_places/great_barrier_reef/
http://fightforthereef.org.au/
http://www.wwf.org.au/our_work/saving_the_natural_world/oceans_and_marine/priority_ocean_places/great_barrier_reef/threats/
https://www.google.com.au/search?q=images&es_thegreatbarrierreef/join-tourshttp://sitemaker.umich.edu/gc2sec7labgroup3/pollution
http://en.wikipedia.org/wiki/Environmental_threats_to_the_Great_Barrier_Reef
http://www.gbrmpa.gov.au/about-the-reef/how-the-reefs-managed/water-quality-in-the-great-barrier-reef
http://www.greatbarrierreef.com.au/information/great-barrier-reef-threats/
http://www.skwirk.com/p-c_s-57_u-464_t-1263_c-4815/qld/sose-geography/the-great-barrier-reef/the-great-barrier-reef/human-threats-to-the-reef
http://fightforthereef.org.au/risks/dredging/
http://www.gbrmpa.gov.au/__data/assets/pdf_file/0020/28811/Ports-and-Shipping-Info-Sheet-4-Shipping-May-2013-update.pdf
http://en.wikipedia.org/wiki/2010_Great_Barrier_Reef_oil_spill
http://www.gbrmpa.gov.au/outlook-for-the-reef/climate-change
http://australia.gov.au/directories/australia/gbrmpa
http://www.greatadventures.com.au/great-barrier-reef-info.html
http://www.brisbanetimes.com.au/queensland/two-bombs-to-remain-on-great-barrier-reef-20130901-2symu.html
http://www.couriermail.com.au/news/queensland/two-bombs-dropped-by-us-marines-over-the-great-barrier-reef-retrieved-two-8220inert-ordnance8221-remain/story-fnihsrf2-1226708549468
http://www.gbrmpa.gov.au/about-the-reef/animals/crown-of-thorns-starfish
http://www.gbrmpa.gov.au/outlook-for-the-reef/Managing-multiple-uses/ports-and-shipping
http://www.qm.qld.gov.au/microsites/biodiscovery/05human-impact/pollution-and-other-factors.html
http://gbrthreats.blogspot.com.au/2010/03/overfishing-in-reef.html