<a href="https://en.wikipedia.org/wiki/Gastropoda" class="extiw" title="w:Gastropoda">Gastropod</a> locomotion <a href="https://en.wikipedia.org/wiki/Trace_fossil" class="extiw" title="w:Trace fossil">traces</a> exposed in sandy sediment during low tide near Spicers Cove, Nova Scotia.
<a href="//commons.wikimedia.org/wiki/User:Rygel,_M.C." title="User:Rygel, M.C.">Michael C. Rygel</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>