it's actually really intersting and didn't know about that behavoir.

But snail essentially have 2 mode of travel, this one is a loping gait used on rough absorbant surfaces or if dehydrated to conserve fluids.

it's basically tipping toe for gasteropods

kozielska-reid.eu/2021/05/15/did-you-know-that-snails-and-slugs-use-different-gaits-to-move-on-different-surfaces/

Did you know that snails and slugs use different gaits to move on different surfaces? - Animal behaviour and cognition

Have you ever seen loping snail? Land snails and slugs have two basic gaits - adhesive crawling and loping - each preferable on different surfaces.

^{kozielska_reid (Magdalena Kozielska-Reid)}