Create a hyper-realistic, Medieval Dark Fantasy image of a mermaid lounging along a slick, moss covered rock in the ocean, her front resting atop the rock while her tail lounges behind her, the end dipping into the water. The mermaid has long, seaweed green hair that sticks to her back, while her tail is the tone of an iridescent pearl, with scales that are arranged in pastel hues. Her back is facing the camera, while ahead of her, far in the distance, is a vast body of land adorned with villas and buildings. Ships are docked at a harbour, each one with high sails of egg-shell white. Illustration style. Intricate and high detail.