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Scientists discover world's deepest underwater sinkhole: 'Its bottom [is] still not reached'

The world's deepest underwater sinkhole in the waters of Chetumal Bay between Mexico and Belize remains shrouded in mystery after researchers reported they have yet to determine its full depth.
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Divers just discovered the deepest blue hole on Earth, and they still can’t find the bottom

A team of researchers has confirmed the discovery of the deepest known blue hole on the planet in the waters of Chetumal Bay, Mexico. Detailed in a study published in Frontiers in Marine Science, the ...