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Great Barrier Reef

Aerial view of One Tree Island in the Great Barrier Reef
Posted inNews

Great Barrier Reef Corals Hit Hard by Marine Heat Wave

by Anupama Chandrasekaran 4 March 20254 March 2025

Extreme heat pushed even resilient corals in the Great Barrier Reef to the brink, limiting recovery.

Close-up view of bright green algae fronds
Posted inScience Updates

Making Sense of the Great Barrier Reef’s Mysterious Green Donuts

by Jody Webster, Mardi McNeil, Helen Bostock, Luke Nothdurft and Maria Byrne 9 March 202321 December 2023

Researchers set sail to the Great Barrier Reef to study how ring-shaped algae deposits formed and evolved, what feeds them, and the diversity of creatures that call them home.

Black sea cucumber, also known as Holothuria atra
Posted inNews

Sea Cucumbers: The Excremental Heroes of Coral Reef Ecosystems

Hannah Thomasy, Science Writer by Hannah Thomasy 16 March 20214 October 2021

Drone surveillance reveals just how big a contribution sea cucumbers make to reef habitats.

CISME devices attached to living coral and a community of turf algae growing on dead coral
Posted inNews

Dead Reefs Keep Calcifying but Only by Day

by J. Oetting 24 December 20196 March 2023

A new measurement technique has revealed that turf algae communities colonizing dead reefs have a dual role, adding new mineral material to the reefs during the day and taking it away at night.

Underwater photo of bleached staghorn coral
Posted inResearch Spotlights

The Effect of Coral Bleaching Events in the Great Barrier Reef

by David Shultz 31 May 201923 February 2023

A new study using seawater chemistry compares the status of the iconic reef before and after a bleaching event.

A school of fish swims in the Coral Sea.
Posted inNews

Heat Waves, More Than Coral Death, May Cause Fish to Flee Reefs

Ilima Loomis, Science Writer by Ilima Loomis 25 July 201815 November 2022

A study over a broad swath of the Great Barrier Reef shows that warming waters directly cause fish and invertebrates to leave the reef, making it harder for coral to recover from bleaching events.

Scientists look at corals for clues to past climate trends.
Posted inResearch Spotlights

Corals Reveal Ancient Ocean Temperatures in Great Barrier Reef

Sarah Stanley, Science Writer by Sarah Stanley 27 October 20169 May 2023

Old coral colonies suggest that a prehistoric warming event called the mid-Holocene Thermal Maximum may have occurred earlier than previously thought.

A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

Features from AGU Publications

Research Spotlights

The Uncertain Fate of the Beaufort Gyre

13 May 202513 May 2025
Editors' Highlights

Beyond Up and Down: How Arctic Ponds Stir Sideways

13 May 20257 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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