Longer term recovery can happen over the course of years and even decades, should corals regrow and recolonize. Scientists are concerned about reefs worldwide. It's then seen bleached 2. This series of images taken by Coral Watch shows a close-up of healthy coral's progression through bleaching, and later covered with thick algae. Only 7 percent of the reef has escaped bleaching, according to researchers at the ARC Center of Excellence. Marshall, a professor at the University of Queensland, says the destructive phenomenon is happening in an area the size of Scotland. Photo 3 shows dead coral with a film of algae, which grows thicker in photo 4.
Photo 1 shows healthy coral.
New Photos Show The Rapid Pace Of Great Barrier Reef Bleaching
Marshall says some of the bleached coral is beginning to recover — but much of it is dying. Accessibility links Skip to main content Keyboard shortcuts for audio player. Photo 3 shows dead coral with a film of algae, which grows thicker in photo 4. Finally, in photo 4 from May, you can see heavy algal overgrowth. The phenomenon is linked to global climate change, says Marshall: Photo 1taken in Dec. Algae begin to grow on the coral, which later intensifies, eventually resulting in disintegration of the coral and the loss of a habitat.