To see a dolphin in your dream symbolises spiritual guidance, intellect, mental attributes and emotional trust. The dream is usually an inspirational one, encouraging you to utilize your mind to its capacity and move upward in life. Alternatively, it suggests that a line of communication has been established between the conscious and subconscious aspects of yourself. Dolphins represent your willingness and ability to explore and navigate through your emotions.
To dream that you are riding a dolphin represents your optimism and social altruism.
To dream that a dolphin is dying indicates feeling of despair. You are feeling disconnected.