Envision a myriad of alien jellyfish gracefully gliding through a mystical ocean, each creature a marvel of sci-fi wonder. They pulsate with vivid colors, casting an ethereal glow that reflects dramatically off the surrounding waters. God rays pierce through the murky depths, illuminating the scene with a majestic, otherworldly light. Underwater particles and bubbles dance amidst the currents, enhancing the eerie, aquatic atmosphere. The vivid hues of the jellyfish shimmer in UHD, capturing the viewer's imagination with an HDR, 8K clarity that reveals every intricate detail of this fantastical realm.