From "Twenty Thousand Leagues Under the Seas" by Jules Verne

For two hours our fishing proceeded energetically but without bringing up any rarities. Our dragnet was filled with Midas abalone, harp shells, obelisk snails, and especially the finest hammer shells I had seen to that day. We also gathered in a few sea cucumbers, some pearl oysters, and a dozen small turtles that we saved for the ship’s pantry.

But just when I least expected it, I laid my hands on a wonder, a natural deformity I’d have to call it, something very seldom encountered. Conseil had just made a cast of the dragnet, and his gear had come back up loaded with a variety of fairly ordinary seashells, when suddenly he saw me plunge my arms swiftly into the net, pull out a shelled animal, and give a conchological yell, in other words, the most piercing yell a human throat can produce.

“Eh? What happened to master?” Conseil asked, very startled. “Did master get bitten?”

“No, my boy, but I’d gladly have sacrificed a finger for such a find!”

“What find?”

“This shell,” I said, displaying the subject of my triumph.

“But that’s simply an olive shell of the Oliva porphyria species, genus Oliva, order Pectinibranchia, class Gastropoda, branch Mollusca—”

“Yes, yes, Conseil! But instead of coiling from right to left, this olive shell rolls from left to right!”

“It can’t be!” Conseil exclaimed.

“Yes, my boy, it’s a left-handed shell!”

“A left-handed shell!” Conseil repeated, his heart pounding.

“Look at its spiral!”

“Oh, master can trust me on this,” Conseil said, taking the valuable shell in trembling hands, “but never have I felt such excitement!”

And there was good reason to be excited! In fact, as naturalists have ventured to observe, “dextrality” is a well-known law of nature. In their rotational and orbital movements, stars and their satellites go from right to left. Man uses his right hand more often than his left, and consequently his various instruments and equipment (staircases, locks, watch springs, etc.) are designed to be used in a right-to-left manner. Now then, nature has generally obeyed this law in coiling her shells. They’re right-handed with only rare exceptions, and when by chance a shell’s spiral is left-handed, collectors will pay its weight in gold for it.

Posted on June 19, 2023 08:42 AM by tasty_y