The Prized Galápagos Sea Cucumber, <i><a href="//commons.wikimedia.org/wiki/Isostichopus_fuscus" title="Isostichopus fuscus">Isostichopus fuscus</a></i>
Courtesy of Henry Nicholls.
CC BY 2.5
Nicholls H: <i>The Conservation Business.</i> PLoS Biol 2/9/2004: e310. <a rel="nofollow" class="external free" href="https://dx.doi.org/10.1371/journal.pbio.0020310">https://dx.doi.org/10.1371/journal.pbio.0020310</a>