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  1. Former NASA astronaut Kathy Sullivan visits the deepest point of the ocean.

    Former NASA astronaut Kathy Sullivan visits the deepest point of the ocean.

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  2. Baltic Sea Anomaly, Atlantis, and Underwater Alien Bases | Mysteries of the Ocean Pt 1

    Baltic Sea Anomaly, Atlantis, and Underwater Alien Bases | Mysteries of the Ocean Pt 1

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    185K
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