Hollow Alphabet Cone Shells
- José H. Leal
- Apr 18
- 1 min read
Our volunteer extraordinaire Dr Tom Annesley returned this week from guiding one of the National Shell Museum & Aquarium Wednesday Beach Walks with a shell fragment that he correctly identified as a portion of the spire of an Alphabet Cone (Conus spurius) shell. The fragment is 33.8 mm (1.33 inch) in its largest dimension.
Inside the fragment, one can see parts of the older whorls (red arrows) that were enveloped by subsequent shell growth. But the rests of the “walls” of those earlier whorls are missing. They have disappeared, and the regular aspect of what is left suggests a condition similar to what is shown in the next photo.
The illustration above shows two shells of Alphabet Cones (found by Lorin Buckner on Sanibel a few years ago) that have been clipped by predators, most likely Stone or Flame crabs. The resulting gashes reveal that the earlier whorls are also gone.
Some cone snails, as do gastropods from a few other families, are known to dissolve their internal shell structures. One of the ensuing benefits, particularly important to cone snails that feed on fish or mollusks, is that the new, roomier internal space enables the animal to swallow larger prey. In addition, some cone species are known to recycle the dissolved shell material to reinforce and thicken the outer shell wall.
That's a cool find! It's amazing what washes up on the beach. Speaking of collecting, it reminds me of the thrill of completing my Pokerogue Dex . Finding those rare creatures in Pokerogue is a real adventure, just like discovering that Alphabet Cone fragment. It's like a treasure hunt, but with digital critters and beautiful shells! If you love collecting things, maybe you will like the game Pokerogue.
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The shells have a very distinctive shape. It is a mysterious destination for slope run
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Crab attacks reveal Alphabet Cone snail shell vulnerabilities. Dissolving inner shell allows larger prey consumption, strengthening the outer shell using recycled material. Play Wordle Unlimited and sharpen your word skills to understand complex natural processes like this!