https://www.youtube.com/watch?v=3yG_sfow11Q Barring a dedicated submersible, the deepest below the ocean’s surface any human has gone is 1,752 feet (534 m), a record held by French divers at the Compagnie Maritime d’Expertises. Marine creatures can be found of course far deeper than that, some even in the darkest and coldest recesses of the bottom of the ocean…