Field guide No. 1107
Fair exchange in shallow water
A crab and a bottle swapped shells.
A crab with a glassy green shell stands beside an encrusted old bottle on a shallow sea floor. Both parties appear happy with the terms.
Field noteA crab in a glassy green shell stands beside an encrusted old bottle. Both parties accepted the terms.
Also possible, also breaking material
Molars in a purple geodeA geode with double-row human molars in place of crystal pockets; the dentist found the cavities.
Silver scale ripples on speaker conesSpeaker cones wear overlapping fish scales, spiralling inward as if each woofer had grown a skin.
Velvet waterfall in an empty theatreFabric doesn’t fall like water, but a lot of fabric falling is merely expensive.
Twisted handset, straight cordPhone cords coil and handsets stay straight. On this phone the curl has moved into the handset.