Great Barrier Reef

Energy Minister Chris Bowen and his Coalition counterpart Ted O'Brien go head-to-head in a debate at the National Press Club. 

Researchers have found crabs are key predators of juvenile crown-of-thorns starfish and could be a hidden link to what controls their destructive spread.

A hole in a soil pond wall in north Queensland has allowed potentially toxic material to seep through to two world heritage areas.

An island paradise in the Great Barrier Reef is home to giant stingrays leaping out of the water and momentarily "flying" metres above the surface.

HMAS Protector, crumbling offshore of Heron Island, played an important part in Australia's naval history and is now a marine paradise providing security for fish, turtles, rays, and sharks.

A raunchy "Get Wrecked on Keppel" tagline paired with scantily clad models helped visitor numbers on Great Keppel Island soar in the 1980s. It's a different scene now.

Ben Cropp is not proud of the way he rose to fame. The 88-year-old sea dog tells about the pivotal moment that made him stop killing sharks and why his next adventure might be his biggest yet.

Ruby Holmes and Heinrich Brauer are caretakers of One Tree Island — a research station 100km off the Queensland coast. It's where they are raising their toddler, Lucas.

Hours from the mainland and in the middle of the ocean, Ruby Holmes and Heinrich Breuer are raising their son on the Great Barrier Reef.

Col Limpus, 84, has committed most of his life to uncovering mysteries about the majestic sea creatures, including founding the popular Mon Repos Turtle Rookery.

Scientists have calculated the cost after flooding and landslides pushed debris over inshore coral reefs in Far North Queensland.  

New modelling reveals some outer reefs will stay 1 degree Celsius cooler than surrounding areas in coming decades — but it's not clear how their coral colonies will fare.

Large sections of the Great Barrier Reef appear to have been smashed by climate change and cyclones this year, with one reef near Lizard Island losing nearly three quarters of its coral cover since the beginning of the year.

Scientists say they have discovered the world's largest coral — measuring longer than a blue whale — on an expedition in Solomon Islands.

Scientists return to One Tree Island on the Great Barrier Reef to assess the extent of last summer's coral bleaching event — and there's some hope amid the devastation.

An isolated reef island only accessible to scientists, holds crucial information about the impact of warming waters and coral bleaching.

These saltmarshes entice many people in for a 4WD adventure, but motorists are destroying the "underrated heroes" of the Great Barrier Reef ecosystem.

Juvenile crown-of-thorns starfish eating coral.

The Coral Sea off Mackay in north Queensland has turned shades of brown, green and pink with bacteria dubbed "sea sawdust". It could hold the key to cracking the "puzzle" of crown-of-thorns starfish outbreaks on the Great Barrier Reef.

Forest revegetation turns the Great Barrier Reef's southern-most island from a barren wasteland into a refuge for a new type of silvereye birds.