Figure 8 - Past and present distribution, densities and movements of blue whales Balaenoptera musculus in the Southern Hemisphere and northern Indian Ocean

Discovery mark placement (triangles, top panel) and recoveries of Discovery marks (arrows, other panels) of blue whales. The top panel shows the positions of all marks (grey ≤1973, black >1973), panels below zoom into a narrower latitudinal range to show all mark-recaptures. Mark-recapture pairs are split between those recovered in the same season, the following season, two seasons later and more than two seasons after the mark. The shortest mark-recapture path sometimes crosses the international dateline. Only the same-season recovery at 43°55′S 50°02′E was identified as a pygmy blue whale.

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Reference

Past and present distribution, densities and movements of blue whales Balaenoptera musculus in the Southern Hemisphere and northern Indian Ocean - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Discovery-mark-placement-triangles-top-panel-and-recoveries-of-Discovery-marks_fig8_228008311 [accessed 13 Jun 2025]

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Figure 8: Discovery mark placement (triangles, top panel) and recoveries of Discovery marks (arrows, other panels) of blue whales. The top panel shows the positions of all marks (grey ≤1973, black >1973), panels below zoom into a narrower latitudinal range to show all mark-recaptures. Mark-recapture pairs are split between those recovered in the same season, the following season, two seasons later and more than two seasons after the mark. The shortest mark-recapture path sometimes crosses the international dateline. Only the same-season recovery at 43°55′S 50°02′E was identified as a pygmy blue whale.

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<a href="https://www.researchgate.net/figure/Discovery-mark-placement-triangles-top-panel-and-recoveries-of-Discovery-marks_fig8_228008311"><img src="https://www.researchgate.net/profile/Anoukchika-Ilangakoon/publication/228008311/figure/fig8/AS:281247113859077@1444065945401/Discovery-mark-placement-triangles-top-panel-and-recoveries-of-Discovery-marks.png" alt="Discovery mark placement (triangles, top panel) and recoveries of Discovery marks (arrows, other panels) of blue whales. The top panel shows the positions of all marks (grey ≤1973, black >1973), panels below zoom into a narrower latitudinal range to show all mark-recaptures. Mark-recapture pairs are split between those recovered in the same season, the following season, two seasons later and more than two seasons after the mark. The shortest mark-recapture path sometimes crosses the international dateline. Only the same-season recovery at 43°55′S 50°02′E was identified as a pygmy blue whale."/></a>