Tentacles with Geometry Nodes

All the materials are created in Blender. No external textures (except hdri for lightning) were used.

HDRI image was taken from PolyHaven website.

A full process tutorial is available on youtube:

This Blender project file contains geometry nodes setup for procedural generation of tentacles.

The tentacle generation works with bezier curves, which means you can draw multiple splines in a single object.

The geometry itself is built with new extrude nodes, introduced in Blender 3.1.

Note: This setup was created with Blender 3.2.1, some features used in this project are not supported in previous versions.