00:05scientists witness glowing lava building new seafloor 1.6 miles deep at a remote pacific ridge
00:12tectonic plates pull apart and fresh seafloor forms in total darkness scientists inside a small
00:18submersible descended toward the ridge where rising temperatures warned the pilot to watch
00:22the gauges orange light shimmered through cracks in the seafloor confirming fresh lava still moved
00:27beneath the deep pacific water thin lava sheets spread across the ocean floor covering old vent
00:33colonies that had stood near hydrothermal chimneys shipboard hydrophones recorded low frequency
00:38volcanic sounds as hot lava met cold seawater in the dark ridge valley sampling bottles moved near
00:43the former vent structure where scientists collected water changed by heat minerals and volcanic gases
00:49the mid-ocean ridge system stretches more than 40 000 miles around earth building new crust where
00:55molten rock rises between plates underwater eruptions release carbon dioxide sulfur compounds iron
01:02phosphorus and nitrogen that change seawater chemistry around deep vents deep sea microbes tube worms and
01:08vent creatures face sudden destruction when lava covers chimneys cracks and feeding grounds
01:12researchers use submersibles hydrophones remotely operated vehicles and underwater robots to map heat
01:17lava paths and recovering vent communities at a dark pacific ridge one glowing crack showed earth
01:23building new sea floor in real time
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