Shoreline of <a href="https://en.wikipedia.org/wiki/Lake_Maracaibo" class="extiw" title="w:Lake Maracaibo">Lake Maracaibo</a>, Venezuela, contaminated by <i>Lemna minor</i> (duckweed) due to nutrient pollution.
<a href="//commons.wikimedia.org/wiki/User:Wilfredor" title="User:Wilfredor">Wilfredor</a>
2007
<span class="int-own-work" lang="en">Own work</span>