<p><strong>Fig. 6.16.</strong> (<strong>A</strong>) Sperm whale (<em>Physeter macrocephalus</em>) mother and calf underwater side view with red dot marks 50 centimeters apart</p>

Fig. 6.16. (A) Sperm whale (Physeter macrocephalus) mother and calf underwater side view with red dot marks 50 centimeters apart

Image by David Lin, adapted from Gabriel Barathieu, Flickr