ethereal fantasy concept art of   A hauntingly beautiful underwater scene unfolds as a submarine glides through an expansive, desolate abyss, the only sign of life amidst the vast emptiness, The sub's beams cut through the dark, shimmering water, revealing nothing but a silent, barren ocean floor, . magnificent, celestial, ethereal, painterly, epic, majestic, magical, fantasy art, cover art, dreamy