All That's Interesting on MSN
Exploring Belize’s Great Blue Hole, the massive underwater sinkhole that’s visible from space
"It was the deepest, deep blue hole imaginable." Some 15,000 years ago, rising sea levels sent water pouring into a limestone ...
Morning Overview on MSN
An oxygen-starved layer deep in Belize’s Great Blue Hole slows decay on the seafloor
Belize’s Great Blue Hole descends through a coral atoll into dark, oxygen-poor water. A 2018 submersible expedition reported ...
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