The sounds of a party filled the place: laughter, conversation, the clink of glasses. But step away from the main room and it was another world. 

Sharks patrol their waters with ruthless intensity. Rainbow fish flit to and fro, a blue starfish pulsing in their tank. Porcupine fish bristle. And stingrays glide through the water like so many fluttering handkerchiefs. 

At the entrance, schools of sea creatures swim to the left of us, to the right of us, and above us, too. It was a dramatic entry into another world, a world of the deep.