The Blue Hole reaches down 30 metres and its contents can only be seen by diving below the surface. | National Geographic UK
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The full depth of the Blue Hole is approximately 410 feet deep. The underwater ecosystem continues to completely change as the crew moves towards the bottom. | Discovery
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Exploring the blue holes of The Bahamas on the @sealegacy 1. It is such a powerful moment to dive over the edge and descend into the abyss. Turtles, sharks, huge schools of fish and maybe even a mythical creature of the deep call this place home. The amazing thing is that right next to these gems of the great blue sea, oil exploration and drilling is taking place putting it all at risk. Please #follow @onlyone and @sealegacy to learn how you can have a voice on this issue. With @mitty @sheltondu
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