Add Yahoo as a preferred source to see more of our stories on Google. cientists have identified what could potentially be the "deepest known blue hole" in the world -- which extends so far down it's ...

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cientists have identified what could potentially be the "deepest known blue hole" in the world -- which extends so far down it's bottom has not yet been reached. They were rolling in the deep.

They were rolling in the deep. Scientists have identified what could potentially be the “deepest known blue hole” in the world, extending so far down that the bottom has not yet been reached.