Scarlett Johansson, striking features, commanding presence, Astraea, empress, water-dominant alien world, flowing bioluminescent armor, scales of deep-sea creatures, shifting colors, mood, environment, armor, iridescent scales, alien sea creatures, bioluminescent elements, shades of blue, green, violet, control over water, tidal waves, ocean currents, trident-like weapon, alien ocean, towering waves, trident raised, wide-angle shot, silhouette, glowing bioluminescent sea, deep blues, glowing greens, vibrant bioluminescent lighting, hyper-realistic 32K quality, intricate patterns, Astraea's armor.