The remora rides along on sharks and whales, so tradition reads it as dependence — hitching a ride on someone stronger, or someone hitching a ride on you.
When this appeared in your dream, what were you feeling?
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.