Diversity of coastal benthic invertebrates from Possession Island (Crozet archipelago, Southern Ocean)

Fieldwork took place in November 2021 during the HA04-Crozet-2021 campaign from the R/V Marion Dufresne II, under the supervision of the French Southern and Antarctic Territories (TAAF). Sampling was performed by SCUBA diving along depth gradients ranging from 6 to 20 m, using 25×25 cm quadrats.

Benthic organisms were collected by hand or scraped from hard substrates. Taxonomic identification was carried out by taxonomists and complemented by molecular analyses to confirm species-level assignments.