50     Biomass <10cm
                                Biomass 10cm−30cm                                   ●

                                Biomass >30cm
                         40
                                                                                                                  ●




                         30
                                                                                                                      ●


                         20
                                                                                                           ●
Change in biomass [%]




                                                                                        ●


                         10
                                                                                              ●

                          0

                        −10

                        −20
                                               ●

                        −30                                                                   ●




                        −40

                        −50     ●
                                                                ●




                        −60

                              North Atlantic South Atlantic   North Pacific   South Pacific       Indian   Southern       Arctic
                                 Ocean          Ocean           Ocean           Ocean             Ocean     Ocean         Ocean