Here are some links that you could find some more relevant information and pictures on the Great Barrier Reef. These sites are VERY reliable and have some very good information on them that should answer ANY question you have or information that you may need.
 

- https://www.barrierreefaustralia.com/the-great-barrier-reef/coralfacts.htm

- https://www.barrierreefaustralia.com/the-great-barrier-reef/great-barrier-reef.htm
- https://www.barrierreefaustralia.com/the-great-barrier-reef/coralfacts.htm
- https://www.reef.crc.org.au/discover/plantsanimals/facts_plantanimal.htm
- https://www2.eis.net.au/~nqtds/infocomm/5gbr1.txt