Field guide No. 1279
Cinder shell cascade
Erupting, but shell by shell.
A black cinder cone on a volcanic plain at dusk has white snail shells pouring down one flank. They spread across the ash like scree.
Field noteCinder cone sheds white snail shells down one flank like loose scree.
Also possible, also breaking category
Calcite zipper over turquoise waterStalactites frame a narrow turquoise opening in the cave. The deposit reached the shore.
Stormclouds instead of berriesSmall dark stormclouds hang where berries would be. Picking is not advised, nor jam.
Scale transitViaducts arch; so do leaping fish. Casting one as the other is civil engineering with flair.
The seabed mimics the cuttlefishCuttlefish copy the seabed. A seabed copying back has picked up the animal’s trick.