Dreaming about a mermaid represents the feminine part of the dreamer that is mysterious and secret. A dream with mermaids can also symbolize a fear of sex. If a man dreams of a mermaid, it could mean that he is scared of determination about the feminine part of himself. If a woman dreams of a mermaid, it signifies that she have doubts about her femininity.
Dream dictionary: Mermaid dream meanings
The mermaid is the symbol of femininity. The one who dreams of mermaid has mystical fantasies about mermaids that could also be related to sexual desires.
Mermaids, undines or water nymphs or any female water spirits symbolize the female aspect of water, its dangers and the mud brought from lakes, rivers and torrents. In dreams they warn us of the deathly curses of love and against giving ourselves without control to the seductions of pleasure.
Perfidy and persecution.