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Measuring sites for blubber thickness and girth measurements. G1–G6 are the girth measurement positions. D1–D6, M1–M6, and V1–V6 are the dorsal, medial, and ventral sites where blubber thickness was measured. The different body sections used for the frustum volume estimations are marked with roman numerals I–V. Figure replicated from Christiansen et al. (2013)
