Tentacles that reach and grasp are read as entanglement — situations or people that hold on and spread into many areas of life. Tradition also links them to the deep, alien unconscious.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.