Callianax biplicata, the purple olive, plows a crazy quilt of trails on intertidal sands. A good low tide will reveal Callianax‘s handiwork on exposed Pacific beaches between southern Alaska and Baja California, Mexico.
What motivates the shape of the trails?
Look at the purple olive, a little intertidal snail, only an inch long.
Last low tide, Callianax left me these, and I’m posting them as my response to Numbers.
I updated this post on September 14, 2022.