Key Points - Russia's Losharik (AS-31), a unique deep-diving nuclear-powered special missions submarine, is reportedly ready for sea trials in 2025 after a nearly five-year repair following a fatal ...
Oceanic manta rays dive to record depths of 1,250 meters (4,100 feet), according to a first-of-its-kind study to examine in detail the extreme deep-diving behavior of these rays. Researchers tracked ...
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