Horseshoe reef
Horseshoe reef before crown-of-thorns invasion.
Horseshoe reef
Horseshoe reef after crown-of-thorns invasion.
Low Isands
Healthy reef at Low Islands.
Low Islands
Healthy reef at Low Islands.
Low Islands
Healthy reef at Low Islands.
Beaver reef
Damage to Beaver Reef by Cyclone Hamish.
Beaver reef
Crown-of-thorns damage on Beaver Reef.
Coral eating starfish outbreak
Population outbreaks of the coral eating starfish Acanthaster planci have been responsible for 42% of the over 50% decline in coral cover on the Great Barrier Reef between 1985 and 2012.
MacDonald reef
MacDonald reef before cyclone damage.
MacDonald reef
MacDonald reef after cyclone damage.
Damaged reef
Crown-of-thorns and cyclone damage.