Leviathan.

Pulses of bioluminescent light rippled outward, cascading like waves from the creature's colossal body. The glow spread like a heartbeat, each pulse illuminating more of the abyss, revealing the sheer scale of the entity hidden within.

Its form was monstrous, coiled and serpentine, with armored plates that shimmered faintly in the light. It was a leviathan, a titan of the deep, its presence both awe-inspiring and terrifying.

Surrounding the behemoth, hundreds of thousands of drifting, jellyfish-like beings pulsed in unison, their delicate tendrils swaying as they floated through the abyss.

Their lights shimmered and danced, forming an otherworldly constellation beneath the water's surface. Each creature moved in perfect harmony with the others, as if guided by a single, unseen will.