Inside the Al Dhafra 'blue hole' - in pictures

The 'blue hole' discovered off Al Dhafra. All photos: Environment Agency - Abu Dhabi
The 'blue hole' discovered off Al Dhafra. All photos: Environment Agency - Abu Dhabi
It provides a unique habitat for fish such as grouper, sweetlips, emperor fish and jackfish.
It provides a unique habitat for fish such as grouper, sweetlips, emperor fish and jackfish.
The underwater sinkhole is about 12 metres deep, 200 metres wide and has an area of about 45,000 square metres.
The underwater sinkhole is about 12 metres deep, 200 metres wide and has an area of about 45,000 square metres.
Similar holes can be found across the world, with the deepest reaching 300 metres beneath the seabed.
Similar holes can be found across the world, with the deepest reaching 300 metres beneath the seabed.