During the project Mission Microbiomes with the RV Tara (August to September 2021) 43 Lagrangian drifters were deployed off the eastern coast of Brazil to monitor the surface flow. The drifters were designed and built at Hereon to follow the upper surface flow (upper ~ 50 cm). These Hereon drifter consist of a 20 cm x 7.5 cm long tube, with a floatation ring at the top. Furthermore, a drogue of 35 cm in both length and diameter is attached, via a flexible cord, in a distance of 20 cm to the tube. When deployed about 5 cm protrude from the water surface, resulting in a ratio of drag area in to drag area outside the water of 21. The tube contains a battery pack and an electronic board, which acquires and reports the GPS position every 5 minutes via a global satellite network in near real time. Table 1 in the attached document summarizes for all deployed Hereon Drifters their deployment time as well as operation time and total covered distance.