Create a detailed black and white line art illustration of a serene girl underwater. She has long, flowing hair that moves with the water currents. Surrounding her are elegant, flowing betta fish with large, wavy fins. Include bubbles of various sizes floating around her to emphasize the underwater setting. The girl should have a calm expression, with one hand gently touching her face and the other visible, showcasing intricate jewelry like a bracelet. The background should be minimal to keep the focus on the girl and the fish, but include some subtle underwater elements like water plants or coral to enhance the scene.