Seismic reflection data collected on the Amundsen Sea shelf during cruise PS104 with RV Polarstern in 2017. 2 GI-guns were used a seismic source, the data were recorded with a 600 m (active length) long streamer. The data are fully processed to time migration. No gain, filter or mute have been applied. The data are in SEGY format. See cruise report of PS104 or 20170012_segy_info.txt file for more information on acquisition and processing parameters.