Passive acoustic monitoring (PAM) data were collected by recorder ICL1721 of type icListen (manufactured by Ocean Sonics, Truro, Canada) at 54.5742° N, 6.1125° E, mooring DBS08-08, in the German Bight, North Sea. Passive acoustic data were collected from October 2018 to December 2018 by IC1721. The recorder was moored at 39 m depth and scheduled to record at a duty cycle of 10 min per 30 min and at a sample rate of 4,000 Hz. Further details about the data acquisition and processing of this data set can be found in the accompanying metadata file (see Additional metadata) as well as the data processing report (see Data Processing Report). Passive acoustic data archived here represent data processing Level 1+, according to the standards defined in the associated Standard Operation Procedure (SOP) Glossary (Thomisch et al. 2023a). Further information on data processing with regard to data preparation and standardization can be found in the associated SOP Part 1: Data preparation and standardization (Thomisch et al. 2023b).

We would like to express our gratitude to BioConsult SH for the logistical support in deploying and retrieving the recorders.