A sea turtle

A sea turtle with a rugged brown shell and flippers gliding peacefully through deep blue ocean waters with subtle waves and ripples, surrounded by a swarm of glowing jellyfish in shades of purple and blue, illuminated by soft bioluminescent light that casts an ethereal glow on the surrounding water, creating a serene and mystical atmosphere, with ultra-realistic detail and textures that showcase the intricate patterns on the turtle's shell and the translucent bodies of the jellyfish, set against a backdrop of dark blue water that fades into blackness, with the turtle's gentle eyes and curved beak prominent in the foreground.