The tables included in this section list taxa that are absent or very scarce in either the Atlantic or the Indian Ocean, and quite abundant in either of the other two major oceanic basins. None of the species covered was scarce in the Pacific but abundant in either the Atlantic or the Indian oceans. Figures are based on all samples where radiolarians were identified (Atlantic: 982 samples, Indian: 698 samples, and Pacific: 2953 samples).
Species recorded at one of the poles only or restricted to the tropics and subtropics. Figures based on the entire dataset.