Currents that run, unseen, under the surface; that which is there, but flowing under what is obvious. Unexpressed feelings of all kinds. Things that are going on "en cashette," veiled, or in hiding. Undercurrents can take the form of suppressed feelings or memories, that drive us from the unconscious mind. They can denote our shadow side, inner saboteur, or "contrary" that fights, internally, against our own best interests. Layers of the mind that reveal their subtle faces during meditation. Subterfuge or espionage. Concealed negativity. Repressed love. Mental chess games or "cat and mouse." Tension building up because of blocked communication. Unwillingness to express true feelings.
The above text is an abridged version taken from The Guide to the Dolphin Divination Cards by Nancy Clemens