Cool new robot follows life underwater

It's hard to study marine phenomena because the ocean is not only big but constantly in motion. The new Tethys robot is a leap forward, a machine that can follow phenomena like algal blooms for months, sending back data all the while. Jim Bellingham, chief technologist at the Monterey Bay Aquarium Research Institute (MBARI) says the highly efficient new design can go "from Monterey to Hawaii on a single charge."