A colossal, scary sea leviathan, featuring a serpentine body with multiple bioluminescent tentacles. Its tough, dark blue skin shimmers with an oily sheen, adorned with glowing, alien-like patterns and sharp, jagged fins. Intricate, pulsating details emit an eerie, green light, suggesting a smooth yet leathery texture. Its enormous head possesses menacing, multi-faceted eyes and sharp, bone-like protrusions.