In northern folklore the seal can shed its skin and walk as a person, so it stands for a self that lives between two worlds. Dream books read it as playfulness, longing for home and hidden identity.
Where in your waking life have you met something like this lately?
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.