<p><strong>Fig. 3.94.</strong> (<strong>D</strong>) A black cotton-spinner sea cucumber (<em>Holothruia forskali</em>) ejects its Cuverian tubules in self-defense.</p>

Fig. 3.94. (D) A black cotton-spinner sea cucumber (Holothruia forskali) ejects its Cuverian tubules in self-defense.

Image courtesy of Roberto Pillon, Wikimedia Commons