<p><strong>Fig. 5.44.</strong>&nbsp;(<strong>C</strong>) Gentoo penguins (<em>Pygoscelis papua</em>) exhibiting porpoising swim behavior, Antarctica</p>

Fig. 5.44. (C) Gentoo penguins (Pygoscelis papua) exhibiting porpoising swim behavior, Antarctica

Image courtesy of Gilad Rom, Flickr