Why cant I animate using shape keys or locroc Thank you for looking in to my problem.
I am having an issue applying shape keys or loc roc to my scene.  I am trying to animate one of the tentacles i have or just have shape keys move the mesh so that it can look like it's floating but when ever I apply loc roc or create a shape key nothing happens. I've been using a curve modifier to move the mesh around.  Is this why I cannot animate?
I've attached a link to the blend file.
https://drive.google.com/file/d/1TUsHGsixeDUOL0bCVrLPKSemdz7Pqu3a/view?usp=sharing
You can use shape keys, they seemed to be empty though (I'd use shape keys to make the tentacles ribbon/wave-like motion for the edges).
For the tentacle motion I'd use bendy bones -