Bikes and motorbikes fished with a magnet (and/or a hook) exposed along the Canal du Midi (Toulouse, France).
<a href="//commons.wikimedia.org/w/index.php?title=User:Roipoussiere&amp;action=edit&amp;redlink=1" class="new" title="User:Roipoussiere (page does not exist)">Nathanaël Jourdane</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>