Turbo Snails Spawning?

[recoiljpr]

So last evening while staring at my tank I noticed 4 new creatures in my tank. They were about the size of a pencil eraser. Two of them were on the glass and they look exactly like my 2 large turbo snails (radula, antenae etc). The small "creatures" were acting just like my turbo snails. Is it possible my two Turbo Snails spawned in my tank? I haven't added any live rock for a few months.

 

[fyrefysh]

Yes, it is possible, but they probably came in on your live rock or sand.