Mesobot is an automous robot operated by a team at Woods Hole Oceanographic Institution (WHOI). Mesobot, is currently being designed to study mesopelagic (midwater) processes. Mesobot will use cameras and lights to non-invasively follow mesopelagic animals, track the fate of descending particles, and follow rising bubbles and droplets, enabling scientists to characterize in situ behavior over extended periods for the first time. With an endurance exceeding a full day, the Mesobot will be able to follow animals as they undertake diel vertical migrations, follow particles and aggregates as they sink, and track bubbles from seeps as they rise. The robot will also carry a pumped-filter sampler, enabling it to capture geochemical samples, plankton, microbes, or seawater. (Model created for and provided by OET and uploaded with permission).