Underwater Pirate in Digital Art Style

Underwater pirate captain gliding through a sunken galleon, rendered in vibrant digital art. A rugged buccaneer in a tattered tricorn hat and emerald-green coat, wielding a gleaming cutlass, surrounded by glowing coral, jellyfish, seaweed, and treasure chests spilling gold coins. Bioluminescent organisms cast neon highlights on rusted cannons, coins, and barnacles as bubbles rise and schools of neon fish swirl. Dynamic lighting with sunbeams piercing the deep blue water creates caustics and a moody, cinematic atmosphere. Highly detailed textures, painterly digital brushwork, and a rich blue-green palette. 4K, ultra-detailed, high-contrast, epic underwater fantasy scene.