Fig. 3: Three-dimensional distribution of marine conservation efforts.
From: 3D ocean assessments reveal that fisheries reach deep but marine protection remains shallow

Protection coverage across depth realms per ecoregions for marine protected areas (MPAs) of all IUCN categories and other effective area-based conservation measures (OECMs) (upper panel) and for MPAs of Ia/Ib IUCN categories only (lower panel). Void cells indicate depth realms that do not occur in a given ecoregion. The last row of each panel (‘total’) represents the total protection coverage (%) across depths in a given ecoregion.