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A close-up look at the Great Barrier Reef’s bleaching

April 14, 2016 - Uncategorized

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These images are a selection of photos taken recently near Lizard Island off the north Queensland coast in Australia. They document the ongoing bleaching on the Great Barrier Reef as ocean temperatures continue to be driven upward by climate change.

SEE ALSO: Coral bleaching comes to the Great Barrier Reef

The bleaching process

Before corals bleach, they are often a deep brown or khaki-green colour. These colours come from the symbiotic algae (sometimes called zooxanthellae) that co-exist with the coral polyp.

Bleaching

Before bleaching…

Image: Justin Marshall/coralwatch.org

During bleaching, as the symbiotic algae depart, you can see the beautifully coloured polyps. Sometimes polyps are transparent and we see only the white skeleton beneath. Other polyps may be brightly coloured, as seen here. Read more…

More about Environment, Great Barrier Reef, Australia, and World
Source: Mashable

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