Dataset: Carbonate rock macrofauna collected by HOV Alvin during R/V Atlantis cruise AT50-24 at Sanak Seep Alaska from May 30 to June 6, 2024

Samples were collected with HOV Alvin using the manipulator. Samples were placed into individual compartments in a biobox on the Alvin basket. Before preserving, samples were kept cold and animals were handpicked to sample tissue for stable isotope analyses (see related datasets for isotopic data, Pereira et al. 2025). The remaining sample was sieved through 0.3 mm mesh, separating the sample in two fractions (a fine fraction with the meiofauna, and a coarser one with the macrofauna), both preserved in 95% Ethanol.