Complex sentence: The large inland portion of Waterhouse Island is privately owned under freehold tenure, however on 28 September 2011,106 hectares of the island became a conservation area (Waterhouse Island Conservation Area).
Split into simpler sentences: The large inland portion of Waterhouse Island is privately owned under freehold tenure. On 28 September 2011,106 hectares of the island became a conservation area (Waterhouse Island Conservation Area).