Figure 11. Example of morphometrics measurements of a fin whale obtained using the morphometrix package. Note also the coloration patterns above the right eye, and the distinct chevron pattern on the back the pectoral fins. These were used to identify individuals and thus determine the identity of the measured animals. This particular image, taken from an altitude of 46.7 meters, gave an estimated total body length of 21.6 meters, greatest width of 2.7 meters, and a volume of 64.6 cubic meters. Assuming a body density similar to that of freshwater, this yields an estimated body weight of about 64 tons.
