The Heart of Borneo is a conservation agreement initiated by the World Wide Fund for Nature to protect a 220,000 km² forested region on Borneo island. The agreement was signed by the governments of Brunei, Indonesia and Malaysia in Bali on 12 February 2007 to support the initiative.[1] The region provides habitat to 10 endemic species of primates, more than 350 birds, 150 reptiles and amphibians and 10,000 plants. From 2007 to 2010 a total of 123 new species have been recorded in the region.[2] A status report from 2012 found that the lowland rain forest within the area is deteriorating and under threat.[3] The Bornean rhinoceros was the most threatened fauna, in 2015 three captive individuals remained in Sabah.[4]