Great Barrier Reef
http://www.ozramp.net.au/~senani/barrier.htm

the Great Barrier Reef Marine Park Authority
http://www.gbrmpa.gov.au/

National Geographic Society (Resources & Links)
http://www.nationalgeographic.com/earthpulse/reef/reef1_flash.html
http://www.nationalgeographic.com/ngm/0101/feature2/index.html

Great Barrier Reef (Links)
http://www.acn.net.au/articles/1999/02/gbr.htm

Australia's Great Barrier Reef Holiday Guide
http://www.thewhitsundays.com/

Undersea Explorer 
http://www.undersea.com.au/