In this underwater sanctuary, Wayne Manor stood not as a grand mansion but as a majestic coral reef, its spires adorned with bioluminescent flora that illuminated the ocean floor. Within its chambers, the Batfamily transformed into merfolk, their forms blending seamlessly with the aquatic realm they called home.

At the heart of this underwater haven, Bruce Wayne, the patriarch known as the Dark Merman, surveyed his domain with a keen eye. His tail, a fusion of midnight blues and blacks, propelled him effortlessly through the water as he kept a watchful gaze over his family.