A high-tech mapping team from CSIRO, Australia's national science agency, has produced an incredible new view of one of Tasmania's most iconic natural features and Australia's deepest lake, Lake St ...
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How Deep Is the Ocean?

What's at the bottom of the Mariana Trench, and how do we know? How deep does the ocean go? We'll answer these questions and more in this deep dive into the world's oceans. Come on in: The water's ...