To keep the illusion of the tentacle, the end needs to be hidden by something. While working on the demo scene update, I found there was not enough length to go below ground to keep the tail-end from getting accidentally exposed. The colliders got in the way.
The current one (tentacle.prefab) has 13 colliders along the body:
So I've made some variants:
9 colliders:
9 colliders, no head:
Since the colliders aren't affected by blendshapes changes, this gives the option to add some shape atoms as colliders and manually animate them for the head.
17 colliders:
Double density. An experiment to see if it results in less bead-like collision. (capsule colliders seems to like to explode actors when put in series like this.)