After a long day on the water, the OTZ engineering team has worked out a number of puzzling bugs in Mesobot's code and hardware. Finally, the vehicle seems to be working smoothly, says WHOI senior scientist Dana Yoerger—meaning that it's only a matter of days before the team can start using it to pull valuable data from the ocean twilight zone off the coast of Bermuda.

—Jennie Berglund, OTZ Field Correspondent