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Just below the water lies a mysterious geologic formation: a blue hole.
A biodiversity hotspot, blue holes protect thriving ecosystems from damaging currents, storms and predators.
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These underwater sinkholes give researchers a rare look at ocean life and how we can protect it. Until a few years ago, only two blue holes were documented in the entirety of the Great Barrier Reef.
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With the help of Google Maps, marine biologist Johnny Gaskell and a team of researchers are finding previously unknown blue holes.
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Spotted using Google Maps' satellite view, the perfect circles along the reef indicate a potential blue hole.
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“There’s still so many spots out in the Great Barrier Reef that are unexplored.”
Johnny Gaskell, Marine Biologist
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Upon arriving, the team discovered healthy coral formations that have sat undisturbed, possibly for centuries.
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The deep, cool waters provide a sanctuary for green sea turtles, giant trevally and many species of sharks.
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Saving years of exploration, Google Maps is helping researchers to more quickly expand our understanding of the world's largest ecosystem.
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Having the ability to identify, explore and document these rare formations is providing an unprecedented look at life within the Great Barrier Reef.