Remarkable Coral Growth Found Inside The Hidden ‘Blue Hole’ In The Great Barrier Reef

Fish swimming around corals in Lady Elliot Island in Australia.

The Great Barrier Reef is the home of the world’s largest coral reef. On the other hand, it lost more than half of its corals since 1998 due to some factors such as climate change and pollution. Amidst this damage of the Australia’s one of the amazing natural gifts, is a “blue hole” with full of surprising corals.

The massive “blue hole” is found by a marine biologist Johnny Gaskell. He first saw the blue hole on Google maps. Then, he went to confirm its existence together with a team.

Gaskell said that what they found inside the hidden lagoon was hard to believe, considering there was a Category 4 cyclone went straight over the top of it about five months ago.

He estimated the blue hole to be about 50 to 65 feet deep. Gaskell and his team are the first ones to dive inside the hole.

So, what did they find inside the huge blue hole? They have discovered significant coral growth. Gaskell said that there were huge Birdsnest Corals (Seriatopora) and super elongated Staghorn Corals (Acropora). He further said that both corals were among the biggest and most delicate colonies he has ever seen, as noted by The Inverse.

Yesterday in the Great Barrier Reef!!! After spotting this deep blue hole on google maps we decided to head far offshore, out further than our normal Reef trips to see what dwelled within. What we found inside was hard to believe considering 5 months ago a Cat 4 cyclone went straight over the top of it. At around 15m – 20m deep there was huge Birdsnest Corals (Seriatopora) and super elongated Staghorn Corals (Acropora) both of which were among the biggest and most delicate colonies I've ever seen. Totally unaffected by the cyclone. The position of this deep hole within the lagoon walls has obviously protected these corals for decades. We may very well be the first to ever dive Gaskell's Blue Hole as it was so far offshore and hidden deep within one of the Great Barrier Reef's biggest lagoons…

A post shared by Marine Bio | UW Photographer (@johnny_gaskell) on

This means that inside this blue hole is a booming coral reef, which is a positive outlook for the home of the world’s largest coral reef. It is reported that corals in the Great Barrier Reef are bleaching and some are dying.

Amusing Planet reports that a blue hole is an underwater sinkhole that was shaped because of the erosion of the carbonate rocks and could be seen as a dark blue circle of water in the ocean. It looks dark blue due to the greater absorption of sunlight that augments with an increase in depth. It is also thought of that the deep water in a blue hole is cooler than in the surrounding ocean.

Meanwhile, Gaskell did not reveal the exact location of the hidden lagoon. This appears to be reasonable as the Great Barrier Reef is now suffering from damaging factors. It could protect the newly discovered coral reefs from destruction.

[Featured Image by Mark Kobe/Getty Images]