Purity of water is hard work and answered prayers for these people. At some point they will return back on earth surface.

People were forced to leave land and live underwater. They excelled in recycling plastic and adapting it for their bionic cyborg costumes. Plastic skin is more durable under water and they can constantly consume plastic from the wastelands and clean the ocean, their new home. Anemone symbionts help them to produce oxygen.

Created with AI Midjourney and animation effects