The Georgia Aquarium, located in Atlanta, Georgia, is the world's largest aquarium.

The Heroes of Olympus

The Mark of Athena

Percy Jackson, Frank Zhang, and Coach Hedge arrive at the aquarium when they are looking for water in Atlanta. Inside the aquarium is a section for VIP members, which is for non-mortals. They are given a tour inside by Keto and meet Phorcys. They find that Keto and Phorcys are keeping many rare mythological sea creatures captive in the "Death in the Deep Sea" exhibit. While there, Phorcys captures Percy and Frank in a large tank so that he can add them to the show. He plans on making them fight all kinds of different monsters for entertainment.

When Coach Hedge passes by the tank with Keto, Percy and Frank manage to get his attention. Hedge knocks out Keto with a swift kick, and the three manage to escape the tank and the aquarium. Later, when Frank is at Camp Fish-Blood, he informs them of all the sea creatures being kept unfairly at the Georgia Aquarium by Phorcys. They send a group of their best warriors, including Bill, to free the creatures.