Figure 1

Sites of ultrasound imaging on finless porpoises. Numbers represent girths of the body: (1) head, (2) axillary, (3) mid-thorax, (4) umbilicus, (5) genital slit, and (6) anus. Black spots indicate imaging sites.
Sites of ultrasound imaging on finless porpoises. Numbers represent girths of the body: (1) head, (2) axillary, (3) mid-thorax, (4) umbilicus, (5) genital slit, and (6) anus. Black spots indicate imaging sites.