This is a Blender Geometry Nodes setup to easily turn any single curve into a tentacle.
- Adjustable Pointiness.
- Auto-extending mesh without stretching.
- UV unwrapped.
- Seamless procedural noise texture included (other materials work nicely, too).
- Custom object attachable at the root, like the included magic circle. (Attach an Attribute node with the name "UVMap" to your custom object material.)
- Make sure to increase spline resolution to the max in the curve properties.
Blue Tentacle Dimension background environment available with my latest rendering setup.