I have never seen anything like this here. My son came home to get me when he found it so I could come take photos. He said “Come see something that looks like it should be in Hawaii!”

Very impressive operculum. And this one had quite a bit of weight to it.

Interesting, looks like a true whelk. I can't find it. That horn-like knob near the aperture, the flat open spiral...

Found yet another of these. Remnants of the syphon still inside.

Wall

Lacking underleaves.