A whimsical anthropomorphic jellyfish pirate with multiple translucent heads, striking a dynamic pose for a character portrait study; the scene is backlit by shimmering light rays piercing through the sea, creating an ethereal glow. Highly detailed and trending on ArtStation, the closeup on the character reveals intricate cartoon-like features and vector art style, with elements of colorful clipart and subtly distorted, fluid forms that suggest an otherworldly presence. The pirate's tentacles are playfully entwined with nautical accessories, and its eyes gleam with adventurous mischief.