Field guide No. 388
Sea urchin weaving ivory lace
Tidepool needlework.
A purple sea urchin on a wet rock has spread a ring of ivory lace around itself, knotted in neat loops among the seaweed and mussels. The tide will want to borrow it.
Field noteUrchins have spines and tube feet, no bobbins. Lacework is a hobby they never took up.
Also possible, also breaking category
Downhill unspoolingThread is white and laid in lanes; so are pistes. The groomers have merely taken the hint.
The starry egg in the cartonTaken as a painted egg, it passes. Taken as a carton holding the sky, it would be a different file.
Zebra stripes slip to the groundMarkings sliding off like loose tape: hide doesn’t work that way, though nothing here contradicts itself.
The seabed mimics the cuttlefishCuttlefish copy the seabed. A seabed copying back has picked up the animal’s trick.