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Related video
underwater video of PUMA
Puma being recovered by the Oden's helicopter and crane
Video (1:16) watch the video

There and back again

Sometime after 7 a.m. Friday, about 3,700 meters, or 2.3 miles under the Arctic Ocean ice cap, the robotic vehicle Puma lost a thruster on a mission to search for plumes from hydrothermal vents on the seafloor. Scientists, engineers, and the crew of the icebreaker Oden all mobilized to try to get the hobbled vehicle back to the surface, to guide Puma to a rendezvous with Oden in the shifting ice pack, and to make a hole in the densely packed ice for Puma to surface safely. 

Read on about our adventure in the slideshow below. Can't see the slideshow? Get the Flash plug in »

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