Coral bleaching

Coral reefs are the most diverse of all marine ecosystems.

Coral Reefs: One Species at a Time

Coral reefs are bustling cities of marine life, until rising ocean temperatures turn them into ghost towns. Can reefs spring back from devastating bleaching events? In this episode of the Podcast of Life ,...

World Oceans Day 2012 - Live Webcast

On World Oceans Day - June 8th, 2012 - the Living Oceans Foundation hosted a live web-based conversation between Sylvia Earle at the Smithsonian's National Museum of Natural History and a team of scientists...
Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.

Corals and Coral Reefs

Coral reefs are the most diverse of all marine ecosystems. They teem with life, with perhaps one quarter of all ocean species depending on reefs for food and shelter. This is a remarkable statistic...
Colorful corals are disappearing in the Great Barrier Reef.

The Great Barrier Reef – Going, Going, Gone???

Video of Storms, Starfish Wiped out Half of Great Barrier Reef Coral Dr. Nancy Knowlton, Sant Chair of Marine Science and Editor-in-Chief of the Ocean Portal, went on PBS NewsHour to talk about Great...

Where did Half of the Great Barrier Reef's Coral Go?

In the past 30 years, the Great Barrier Reef -- Australia's iconic natural wonder -- has lost half of its coral to a combination of forces. Dr. Nancy Knowlton, Sant Chair of Marine Science...

Coral Under Pressure: Monitoring Bleaching In Real Time

A coral head in the Mesoamerican Reef has both bleached and living coral. The white sections are bleached and the brown parts still contain zooxanthellae, the symbiotic algae that provide food to their coral...
Coral Spawning by Moonlight

A Tale of Sex and Stress in the Ocean

A coral has just spawned. Each of the hundreds of polyps releases a small pink bundle of sperm and eggs. Credit: Raphael Williams Welcome to Citizens of the Sea , a new blog series...
An underwater photo of coral recovering from a bleaching event.

A Pleasant Surprise: The Recovery of Bleached Panamanian Corals

These corals are still in recovery after a mass bleaching in Panama, in the summer of 2010. You can see some bleaching on the tops, but the sides are looking good. Credit: Amanda Feuerstein...