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Global Population Trends and Human Use Patterns of Manta and Mobula Rays

Figure 4

Fine-scale distribution and sighting frequency (SF) from REEF diver surveys.

Circle sizes are proportional to effort (number of dives). Grey circles represent sites where mobulids were never reported, green circles represent sites where mobulids were present at any time and blue squares show sites where >10 individuals were observed at any point during the survey period. In (a) Hawaii SF = <1–99%, effort = 1–949 dives; b) tropical eastern Pacific: SF = <1–86%, effort = 1–152 dives, and c) tropical western Atlantic: SF <1–24%, effort = 1–2,039 dives.

Figure 4

doi: https://doi.org/10.1371/journal.pone.0074835.g004