Fig. 4: Global shark and ray species richness, threat, and proportion threatened by group.
From: Half a century of rising extinction risk of coral reef sharks and rays
a, e species richness by group. b, f number of threatened species by group. c, g threatened species as a proportion of total richness (for cells with >5 species) by species group. a–d sharks and e–h rays. Scale bar: 5000 km. d, h histograms represent the number of grid cells containing different percentages of threatened species.
