A tiny spare-time project with some strand and particle parts created mostly with ICE in Softimage. I rendered with Redshift and did some comp-work(glow!) in Fusion.
In sum: take the normals from the obstacle with some crossproducts and random values for the direction vector. In frequence, i add points to the position of the parent points to generate the brunches.
Really simple stuff: Curved animated brunches. Strand dynamic framework (verlet) uses for the tentacles. Balls done with rigid bodys, covered with a dynamic mesh generated with the polygonizer. Cached all out and shifted into the renderscene(s).