Figure 2

Scatterplot of spotting intensity on dorsal fins and bodies of Indo-Pacific humpback dolphins. Mean scores of the spotting intensities on the dorsal fins vs. bodies of Indo-Pacific humpback dolphins from the eastern Taiwan Strait (green squares), Pearl River Estuary (yellow squares) and the Jiulong River Estuary (blue circles). Small symbols = 1 to 5 individuals; medium symbols = 6 to 10 individuals; large symbols = >10 individuals.