In old scripture and legend the leviathan is the untameable beast of the sea, and in dreams it stands for a force far larger than any one person can control.
Does the traditional reading fit your dream, or did it mean something else to you?
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.