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00:00:36
In May 2009, the ROV Jason captured these images of violent explosions of the West Mata volcano near Fiji. At almost 4,000 feet underwater, this is the deepest erupting volcano ever witnessed and captured on video. It's also the first time anyone has ever observed the formation of deep-ocean seafloor as it's happening.

00:31:28
Hear from marine biologist Dr. Stacy Kim, who uses a small camera-equipped remotely operated vehicle (ROV) to investigate the bottom-dwelling creatures under the sea ice.