Create a highly detailed, full body, realistic image of a female character in an ethereal aquatic or celestial setting. The character should have short turquoise hair and a silver headdress with a fin-like element and a hovering orb above it. Her dress is form-fitting, glistening like a mermaid's tail with sequins or shiny beads, and adorned with pearl necklaces and a tassel at the waist. Her pose should be elegant and graceful, with one arm lifted as if balancing the floating orb. The setting should enhance her otherworldly qualities, with soft, ambient lighting that suggests an underwater or space-like environment. The overall mood is serene and mystical, capturing the essence of an aquatic or celestial being.