Girls may dream of seeing a mermaid because they are fans of Disney’s Ariel. When an adult male or female dream of a mermaid, it means they are being attracted by an exotic creature (like a beautiful or handsome human). This dream may come about after the brain has processed stimuli and turned it into information. Then it decides to bring the unconscious knowledge into the forefront. Sometimes, your brain uses the image of the temptress (female) or temptor (male). Other times, your brain uses another image, which is an attractive one, to stand for the temptation.