the Year of Polar Prediction (YOPP) in 2017-2019, and the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC), planned for 2019-2020. 12 13 FRAM Observatories 2. Water Column [...] sight Key species Investigations - LOKI 19 Detecting marine mammals using hydroacoustics: Interview 20 - 21 3. Microbial Observatory 22 - 23 4. On the Sea Floor 24 - 25 OFOS 26 Autonomous Crawler Tramper [...] . LOKI continuously takes in situ high-resolution photographs of organisms and particles of 0.2 to 20 mm size whilst being towed through the water column. Sensors measure temperature, salinity, depth,