score_9, score_8_up, score_7_up, black background, dark theme, (ocean), dreamy, fantasy, cute, star \(sky\), solo, 1boy, slarkpdxl, fish, fins, blue skin, male, hood, arm wrap, shoulder armor, partially submerged, yamchapose, lying, on side, closed eyes, syuro, bioluminescence, cyan glow, (phytoplankton), sbfte