Thalassia testudinum - <a href="https://en.wikipedia.org/wiki/Seagrass" class="extiw" title="en:Seagrass">Seagrass</a> (<i>Thalassia testudinum</i>) bed with several <a href="https://en.wikipedia.org/wiki/Sea_urchin" class="extiw" title="en:Sea urchin">echinoids</a> (<i>Tripneustes ventricosus</i>), Grahams Harbour, <a href="https://en.wikipedia.org/wiki/San_Salvador_Island" class="extiw" title="en:San Salvador Island">San Salvador Island</a>, <a href="https://en.wikipedia.org/wiki/Bahamas" class="extiw" title="en:Bahamas">Bahamas</a>. Taken 1999. © Jstuby at English Wikipedia - Public domain - Wikimedia Commons
Marine du Prêcheur - Albert Falco - Saint-Martin