vermitted snails??

[Borgie234]

Is this vermited snail, if so what's is the harm of living with them?

 

[Auquanut]

Looks like it to me. A lot of people say to eradicate them as quickly as possible (they can bother your corals). I have them in my 125. Seems like they are not as prolific as they were when the tank was young. I really have to search to find one nowadays. Also, I have never had any problem with them irritating my corals. Even still, I would say better safe than sorry.

 

[Crabs McJones]

Yup, vermetid snails. As mentioned above alot of people will try to get rid of them. I've found that if you keep excess food to a minimum they tend to self regulate their numbers