An anthropomorphic jellyfish pirate character, intricately designed in a posed portrait, illuminated by a dramatic backlight with radiating light rays, showcasing exquisite detailing and artistry, set against a vivid oceanic backdrop. The jellyfish pirate sports a flowing, bioluminescent mane resembling jellyfish tendrils, with translucent pirate attire, adorned with barnacle-encrusted accessories and a shimmering, waterlogged tricorn hat. Their eyes gleam like polished pearls, and a coral-encrusted cutlass is clutched in one tendril, capturing an adventurous spirit. The scene is rich in texture and depth, reminiscent of a mysterious sea adventure, emanating a mystical, otherworldly ambiance, creating a visual feast that stands out as a unique, trending piece on ArtStation.