The third level in Bioshock after Medical Pavilion. Neptune's Bounty serves as a place for the illegal business in Rapture; it's also the place where the sea slug-like parasite which produces ADAM was discovered.
 Fontaine Fisheries
Neptune's Bounty houses the first fishery in Rapture, which was used by Frank Fontaine and his group to smuggle equipment from the surface. Crates with the smuggler's icon are still lying around the area.