Land boundaries: none
Coastline: 10 km
Maritime claims:
Contiguous zone: 12 nm;
Continental shelf: 200 m;
Extended economic zone: 200 nm;
Territorial sea: 12 nm
Climate: tropical, but generally dry; consistent northeast trade winds with little seasonal temperature variation
Terrain: mostly flat with a maximum elevation of 4 meters
Natural resources: guano (deposits worked until about 1890)