Mahri-Nui once part of North America with Voya-nui but the residents thought that America's taxes were too high, so they desstroyed the land connecting the two together and broke off.With Voya-Nui still attached to it the two cities became close to each other until Voya-nui started dumping it's trash on Mahri-nui, this attracted Ehlek. As the amount of rubbish increased Mahri-Nui became heavier and heavier until it just sapped in half and sunk, bringing with it Ehlek, trash, a few screaming Matoran and more trash. The Matoran of Voya-Nui still drop their trash where Voya-Nui once was and the survivers resisting in a massive fart bubble rely on their rubbish to fashion as ammunition for their Play-Doh blasters.