Speaking of #dextral and #sinistral #snail shells, they often occur via co- #evolution with #predation:

“Asian snail-eating #snakes (Pareas) have more teeth on the right mandible and specialize in predation on the clockwise-coiled majority in shelled snails by soft-body extraction. Snails have countered the snakes’ dextral-predation by recurrent coil reversal, which generates diverse counterclockwise-coiled prey where Pareas snakes live.”

🐌 🐍

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4820687/#!po=26.9231