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General map of Antarctica with the study area highlighted (green box). Detailed maps of the sampling areas are provided in Figs
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Sampling stations map in the Ross Sea area, Antarctica. The area in the red box is depicted, at a finer spatial scale, in Figs
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Detailed map of the sampling stations of the PNRA expeditions III, V, IX, X, XI, XIII.
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Detailed map of the sampling stations of the PNRA expeditions II XIV, XV, XVII, XX, XXI, XXV, XXVII, XXVIII, XXIX.
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ROV video frame reporting the presence (arrows) of the species Lycopodina cf. vaceleti (van Soest & Baker, 2011) at Terra Nova Bay.
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Taxonomic coverage (reported in percentage of specimens per Order) of MNAPorifera collection. Poecilosclerida cover ~43% of the collection specimens, followed by Haplosclerida (~24%), Suberitida (~10%) and Lyssacinosida (~9%). The remaining orders cover less than ~14%.
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ROV video frame of the species Tedania (Tedaniopsis) oxeata Topsent, 1916 (MNA 8244) found at 250 meters of depth before the use of the ROV arm to obtain a fragment.
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Video of the 3D model of Tethyopsis brondstedi (Burton, 1929) (MNA 2839), a very uncommon sponge only occurring in the Ross Sea. The diameter of the main spherical body is ~10 mm and the length/width of the oscular tubes are respectively ~30 mm and ~5 mm.