Coral reef halos, visible from satellites, can indicate reef health by reflecting predator presence and coral layout.

A team of scientists tracked more than 400 corals that experienced intense ocean heat last year. More than half the corals died.

Clown Fish Great Barrier Reef Master Reef Guides and marine biologists have also backed the submission drawing attention to the fact that the Great Barrier Reef protects more than 9,000 species of ...

over fishing and coastal development. Purple and yellow Coral at the Great Barrier Reef.(ABC News: Chris Lewis) As scientists, Jenny and John are all too aware of them. But they also marvel at how ...

and I realise these fish are largely responsible for the underwater racket, along with the 9000 other species that call the Great Barrier Reef home. Earlier, on the two-hour catamaran ride out to ...

1,500 species of fish, 4,000 species of mollusks and, yes, an abundance of corals. But big does not mean indestructible. The Great Barrier Reef Marine Park Authority, which has jurisdiction over ...

Parrotfish and other herbivores will leave a reef's shelter ... Then, they used Heron Island in the Great Barrier Reef off Queensland, Australia, as a case study, applying satellite-imagery ...

In 2016 and 2017, marine heat waves caused by climate change resulted in mass bleaching, which killed about half of the corals on the Great Barrier Reef ... dozens of fish, two dogs and a ...

I realized this while snorkeling the Great Barrier Reef recently ... Perhaps a stop at the office and library to check out Reef Fish Identification or ask questions of the Master Reef Guide.

The Great Barrier Reef was recognized as a UNESCO World Heritage Site in 1981. The vast underwater ecosystem is home to more than 400 types of coral and 1,500 species of fish, according to UNESCO.