Manta Ray Lounge

The Manta Ray Lounge is a large bar and club located in the Bathyspheres DeLUXE department of Fontaine's Department Store in Rapture. The lounge itself is extremely lavish, sporting massive ceilings, large windows, ornate design, and VIP booths for the high-paying customer. The elevator to Frank Fontaine's office, labeled "executive suites," is in the rear of the lounge. Atlas's secret panic room can also be discovered in the VIP lounge once all four notes have been discovered.

When Atlas began taking command over the Department store he used the lounge as storage for his food supplies. The lounge was watched over by his henchmen who were ordered to distribute food among the Splicers in order to gain their allegiance. Not long after however, those desperate for much needed supplies broke into the lounge and killed the men gaurding it.

Burial at Sea - Episode 2
Elizabeth must enter the lounge in order to use the elevator to gain access to the top of the structure, so she can use the Lutece Particle to float the building back up to the city above.