Narrator: This is the Great Barrier Reef, and it's dying. Less than 20 years ago ... the longest coral-bleaching events ever recorded. It devastated the reef, killing off nearly 50% of the ...

They considered 250 vacation destinations to make the final list. These breathtaking photos will show why the Great Barrier Reef earned the top spot.

Coral garden with Yellow-striped Fairy Basslets and Damselfish in the Great Barrier Reef in Queensland. Credit: Auscape/Universal Images Group via Getty 大堡礁三分之二的地区的珊瑚 ...

WASHINGTON (AP) — Ocean temperatures in the Great Barrier Reef hit ... too hot and coral expel the algae that provide them with color and food, and sometimes die. Earlier this year, aerial ...

The Great Barrier Reef ... long-term picture of the ocean surface temperatures driving coral bleaching. It shows recent sea surface heat is unprecedented compared to the past 400 years.

Stretching over 1,200 miles, Australia's Great Barrier Reef is the largest structure on Earth built by living organisms. Even for its size, it houses an incredible biodiversity -- literally ...

George Roff - a marine ecologist at CSIRO - has been documenting the transformation of coral in the Great ... also been diving the Great Barrier Reef for the past 20 years. She says her latest ...