Amphirite, the Greek goddess of the sea and wife of Poseidon, seated on a marble pedestal covered in coral, with her long hair flowing freely and a golden crown upon her head, wearing a flowing white chiton with gold trim and a large turquoise gemstone on her chest, in a majestic pose against a backdrop of columns and an underwater landscape, with rays of sunlight breaking through the water, photorealistic rendering, cinematic lighting, high detail