Guardian: Here on Heron Island, you could be forgiven for thinking everything is calm on the Great Barrier Reef. There are kilometres of gorgeous coral and a bustling ecosystem around it huge schools of colourful fish, turtles, rays and sharks.
It is the reef you grew up seeing on documentaries.
And, above the water, the reef is supporting an astounding colony of birds everything from clumsy mutton birds that fall into trees and haunt the island at night, to cheeky white-capped noddies that appear...