Light-bulb sea squirt (<i><a href="//commons.wikimedia.org/wiki/Clavelina_lepadiformis" title="Clavelina lepadiformis">Clavelina lepadiformis</a></i>) colony growing on a wreck in the English Channel.
<a href="//commons.wikimedia.org/wiki/User:Esculapio" class="mw-redirect" title="User:Esculapio">Esculapio</a>
CC BY 3.0
Own work by uploader derived from <a href="//commons.wikimedia.org/wiki/File:Lightbulbseasquirt_1.jpg" title="File:Lightbulbseasquirt 1.jpg">Image:Lightbulbseasquirt 1.jpg</a> by <a href="//commons.wikimedia.org/w/index.php?title=User:Que&amp;action=edit&amp;redlink=1" class="new" title="User:Que (page does not exist)">Que</a>