This intrepid robot is the Wall-E of the deep sea

Enlarge / With extra-wide tracks and a bunch of other clever features, the Benthic Rover II can roam the seafloor for years at a time.Madison Pobis | MBARI

The Benthic Rover II is the size of a compact car, although it rocks fat treads, making it more like a scientific tank. That, along with the two googly-eye-like flotation devices on its front, gives it a sort of WALL-E vibe. Only instead of exploring a garbage-strewn landscape, BR-II roams the Pacific seafloor, 13,000 feet deep. The robot’s mission: to prowl the squishy terrain in search of clues about how the deep

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