Ultra photorealistic wildlife documentary photograph of a colossal extraterrestrial marine megafauna in a frozen alien ocean on a distant exoplanet, the creature spans hundreds of meters and moves slowly beneath a fractured ice-covered sea surface, semi-transparent armored body revealing glowing internal biological systems, massive fin structures pushing through thick icy water, ice sheets cracking above its movement, bioluminescent plankton illuminated beneath the ice, deep blue abyss below with faint volcanic vents, scientifically plausible alien evolution adapted to subzero oceans, dramatic natural lighting filtering through ice layers, volumetric light rays, HDR, 16K, RAW photograph, ultra detailed, no humans, no technology, no text, no logo, no CGI, clean image.
