Nassarius vs Turbo

[DACJ]

When I said versus, I mean in a duel...not in comparison...

I just bought 3 of each from LFS today, and the store put them all in the same bag... when I got home 20 mins later...All three shells of Nas were empty...or as far as I can see nothing inside...do they retract so far in that you can't see? The turbos are fine which leads me to think that they ate the Nas....

Any ideas fellows? I've heard about Nas attacking turbo, but not the other way around....

Anyway...I left them all on the sand facing down so won't be attack (if they are still inside)....Going out for dinner hoping that they will start moving by time I get home...