The atoll will be a circular breakwater of 16-20km (10-12 miles) diameter, surounding a lagoon of calm water.
Like in many natural atolls, people lives on small artificial islands, house boat, or floating tents, according to the taste and skills of the inhabitant.
The breakwater is built on a reserve a fresh water. The seaside is covered by various types of coast type to maximize the diversity of ecosystem. The lagoon side is covered by rich topsoil covered of various plants and cultivation.
The bottom of the lagoon is open to the deep sea, but protected from unwanted predator by a net. Many forms of mariculture are practiced in box and other systems hanging at different depth.