What if blue whales assembled themselves into a moving city

In the deep open ocean, a pod of enormous blue whales rearrange themselves into a vast moving city with streets, towers, and working pathways. The original material remains recognizable in every building while the city travels as one structure. Sun shafts, bubbles, plankton, and distant divers establish their scale. Enter between the forming streets and pull upward to show the city moving across the landscape.