Dataset of Bottlenose Dolphin Acoustic Recordings from Boat-Based Encounters Using HydroMoth Devices, Event 006 (2024-12-01)

This record presents eight minutes of underwater acoustic recordings of a group of bottlenose dolphins (Tursiops truncatus) obtained during a boat-based encounter on 1 December 2024 in the Costes del Garraf (Natura 2000 site ES5110020; Catalonia, Spain, north-western Mediterranean Sea). The dataset forms part of a participatory bioacoustics pilot that investigates whether low-cost devices (HydroMoth; Fs = 250 kHz) together with an open, replicable analysis pipeline, centred on free/open-source software (PAMGuard, Audacity, JASP) and freely accessible tools (Raven Lite), can be used to detect and qualitatively characterise odontocete vocalisations under realistic conditions. The workflow is also designed to ensure end-to-end data flow to open biodiversity repositories: media, configurations and supplementary materials are preserved in Zenodo, whereas Darwin Core tables are published via GBIF IPT, with SimpleMultimedia entries in the DwC-A resolving back to Zenodo to support FAIR discovery and reuse.