Is there a slowest creature in D&D, if so which?

Based off of my other question What creature or vehicle has the fastest unmodified speed?, I’m wondering if there is a possibly a slowest creature in D&D 3.5e?

I am looking for basic speed, no modifications of any kind: magic, psionics, levels, templates, feats, whatever. Just unmodified as-it-is-printed. Something that I can point to.

Unlike my other question, just creatures, not vehicles.