Sphere dedicated to wetlands in the Oceanografic of the City of Arts and Sciences in Valencia, Spain. The wetlands are one of the richest and most productive ecosystems on the planet. All wetlands are units of transition between the aquatic and terrestrial environment may be found in continental and coastal zones, and to play a key role in regulating the hydrological cycle and filtering pollutants. In this habitat we are under a sphere 26 meters high, two of the most characteristic coastal wetlands on the planet: American mangrove swamps and Mediterranean marshes.