The lightning whelk seashell is one of my favorites, with it’s stripes and long shell opening. It can grow to quite a big shell also. I have seen many of these shells, and have some in my collection, but this is the first time I have found a live mollusk inside a lightning whelk shell.
I have a little video below where you can see it moving along the sand.

This shell had a particularly white spire – top swirl – which was quite unqiue. Instead of finding a hermit crab dangling his legs out of the opening, I saw the snail! Honestly, I didn’t expect that when I saw the shell moving around on the soft sand of the river bottom. Once the snail dies, I’m betting a hermit will move in. I may come across this shell again on my adventures.
This is one of the whelks found in Florida.
Thanks for that info.
The Lightning Whelk is the state shell of Texas.