Data Pangaea Guerreiro et al. 2021_M2U = Coccolith-CaCO₃ fluxes (mg/m²/d), Coccolith-CaCO₃ %, and Coccolith-% contribution to CaCO₃ flux of Calcidiscus leptoporus, Emilinia huxleyi, Florisphaera profunda, Gladiolithus flabellatus, Gephyrocapsa ericsonii, Gephyrocapsa muellerae, Gephyrocapsa oceanica, Helicosphaera spp., Umbellosphaera spp. Rhabdosphaera spp., Umbilicosphaera spp., Reticulofenestra sessilis, other taxa, total coccolith-CaCO₃. Auxiliary PIC (Particulate Inorganic Carbon) data from NASA's Ocean Biology Processing Group (https://oceancolor.gsfc.nasa.gov) are also provided.