Measuring America’s Mega-Tanks: Visual Breakdown of the Biggest Aquariums in the Us by Water Volume

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The crown jewel of Atlanta's infrastructure is the Ocean Voyager exhibit, built to hold 6.3 million gallons of saltwater. The habitat was designed specifically to support pelagic species that never encounter physical barriers in the wild. Its footprint stretches 284 feet long, 126 feet wide, and drops to a depth of 30 feet, providing the volume necessary to allow wide-ranging marine life to swim without repetitive turning stress.

Visitors access this artificial deep sea through a 100-foot-long submerged acrylic viewing tunnel before stepping into a viewing theater framed by a seamless panel measuring 61 feet wide and 23 feet tall. The acrylic itself is two feet thick, manufactured to withstand over 50 million pounds of hydrostatic pressure while preserving zero-distortion optical clarity. Within this basin, several whale sharks share space with massive pelagic rays, bowmouth guitarfish, and thousands of schooling jacks. Maintaining such a dedicated manta rays habitat requires a carefully calculated current: water circulates through hidden discharge jets to provide the continuous ram-ventilation these giants require to breathe.