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New submitter roat35 tips news that researchers from the Scripps Institution of Oceanography have used Dropcam — a relatively small, glass-walled device containing an HD camera — to make videos of lifeforms that exist in the Mariana Trench, more than six miles below the surface of the Pacific Ocean. One of the more interesting organisms at those depths is the Xenophyophore, a creature which, despite being single-celled, can grow to be over 10 centimeters wide. "Scientists say xenophyophores are the largest individual cells in existence. Recent studies indicate that by trapping particles from the water, xenophyophores can concentrate high levels of lead, uranium and mercury and are thus likely highly resistant to large doses of heavy metals. They also are well suited to a life of darkness, low temperature and high pressure in the deep sea."