i heart seashells. Shells have a way of talking to us, don’t they? They make us feel deeply connected to the vast sea and pull us towards it. This PONDEROUS ARK shell washed up at my feet with a heart carved in it. Awwwwe, so sweet! I love you too! But hmmmm… other than being an oh-so-sweet message from King Neptune, how did this happen?
We see natural holes drilled in all sorts of shells, so it’s time to find out how they are made. The hole in this SHARKS EYE tells me a little secret of what happened to its life. The clue? It has a perfect countersunk borehole with a beveled edge twice the diameter as the inner diameter. Because of the shape of that hole, you can bet that he was eaten by another SHARKS EYE! OMG They are cannibals!
We have to guess what happened to this next guy because it looks like a fellow predator SHARKS EYE started carving up his next meal but stopped before he tasted victory.
By looking at the hole in this DISK DOSINIA, I’m going to assume that a SHARKS EYE made a meal out of this guy too.
Geez, SHARKS EYES have a smorgasbord of choices for their buffet. Looks as though they like BUTTERCUP LUCINES too.
A straight hole with only a slight beveled edge like this LADY-IN-WAITING VENUS CLAM …
…was most likely drilled by some sort of MUREX… like GULF OYSTER DRILLS. Aha! That’s why they are called “DRILLS”!
The grooves in these CROSS BARRED VENUS CLAMS and TRANSVERSE ARK aren’t the handiwork of the SHARKS EYE or DRILLS. These grooves were most likely made by a BRISTLE WORM. It uses a rasping technique with its bristled body while secreting acid to etch a groove in the shell to make a nice cozy place to rest.
If you have never seen a BRISTLE WORM, click on the video to watch the first time Clark and I came across a BRISTLE WORM…. and then come back to see what cute tokens they make.
Last May, Lisa from Shellabaloo 2 was having a great time sifting through shells at Blind Pass Captiva and found a few messages on shells she shared…
After Shellabaloo, she sent me this sweet CROSS-BARRED VENUS shell with a smiley face on it (made by a BRISTLE WORM). I keep it by my desk!
So let’s get back to that heart I received from King Neptune … these bigger holes most likely were drilled by a STIMPSON CHIMNEY CLAM. Oh, What? You’ve never heard of a STIMPSON CHIMNEY CLAM before? LOL Well, neither had I before I got so curious about what made that heart shape and found out that two separate drilled incidences by these clams are the most likely culprit. When I find a STIMPSON CHIMNEY CLAM, you will be the first one to know about it and I will post a photo. I already have an appreciation for them since they are quite the artists!
I just assumed that a shell with lots of little holes in like this was just from regular wear and rear by the salt and wave action… like when you wash and wear your favorite shirt too many times. One day, you’ll start to see holes in it! But some times shells that look like this tend to be “holey” because BORING SPONGES have invaded it as a living space.
And I always love to see someone string them for jewelry…
I would have never known where to start finding information on these cool holes in shells if Lisa from Shellabaloo 5 (OMG I just realized… both Lisas from different Shellabaloos are fascinated with holes in shells too! Ha! They need to know each other, wouldn’t you say?) anyway… I wouldn’t have known there was such a term as “Shell Bioerosion” and such if she hadn’t shown me where it was in this book Living Beaches of Georgia and the Carolinas .
There’s all kinds of fun to be had in exploring the common shells if you just give them a chance. They may even tell you a secret!
What the heck??? I was taking video of our pleasant little morning at low tide shelling the east end of Sanibel finding a SUNRAY VENUS,COCKLE SHELLS, a live LIGHTNING WHELK, and some hermit crabs in MUREX shells …then…. Clark finds a BRISTLE WORMin his new shelling rake (Sea Shell Sifter). Weird stuff, Dude, but a little on the cool side too. Take a look…
On the way on our “pleasant little morning” we met Brian and Mary from Weston, Florida who come to Sanibel for very big occasions. They got engaged 2 years ago on Sanibel then got married on Sanibel 3 months later.