Need help IDing this hitchhiker

[Biocube32er]

I would say it is about 1/2 inch long. I only have a few that I can see.

 

[Biglew11]

Caribbean worm snail. Petaloconchus sp. I have them in my tank.
https://www.reef2reef.com/threads/worm-snails.118197/

 

[KJ]

I would say it is about 1/2 inch long. I only have a few that I can see.

Vermetid snail.

 

[Biglew11]

found this interesting to get rid of them.
http://www.dfwmas.org/community/reef-discussion/ive-found-the-cure-for-vermetid-snails/.lol