Vision of Cancer, the water born. Cancer has a particular significance to me, as I was born July 10th and am a cancer sign. The symbols associated with cancer are the crab, whose hard shell hides a soft interior. Water is the dominant element of the cancerian nature as it symbolizes emotion, depth of consciousness, and flowing or raging movement in fluidity. The moon plays a key element in cancer through intense reflection, and tidal changes in emotion through the ebb and flow of energies in our lives. A cancer can be the overflowing cup of love and beauty, or the raging storm tempered only by the soft dove of peace.