Id Please

[ihavtats29]

found some slugs today all are white one is black both have small finger nail like shells, here are a few pics of the black one
are they reef safe or are they going to hurt my clams sps and lps?

thanks for answers in advance

 

[greenbean36191]

These aren't slugs. These are black Stomatella snails. They're excellent grazers.

 

[ihavtats29]

Thanks a lot for the responce ... ^_^ Mahalo