Dataset of macrobenthic species, organic matter content and grain-size distribution in surficial seafloor sediments in outer continental shelf, pockmark fields and Capbreton canyon tributaries in the southeastern Bay of Biscay

This dataset presents the macrobenthic species abundance and biomass in soft bottom areas located at southeastern Bay of Biscay. Data on organic matter content and grain-size distribution in surficial seafloor sediments is also provided. Samples were obtained with Shipek and Smith-McIntyre type grabs in several surveys carried out between 2010 and 2020, covering a range of depths of 32-2241 m. Abundance and biomass of macronbenthic species are given. This information contributes to the knowledge of the spatial variability in the composition of the soft-bottom macroinfauna in a transitional zone from the continental shelf to the tributaries of the Capbreton submarine canyon.