Looks like something has been cleaning my garden table :)
Any idea what did this? I live in western/central-ish europe.
I would be posting this in a nature related community if you don't get any precise answers. Personally, I don't know, but it reminds me of the trail left behind by some slugs when eating mold (Australian slugs, where I am). It's clearly different, but the movement looks similar. I'm intrigued as to what left these ones though