Reefs at Risk Revisited is a high-resolution update of the original global analysis, Reefs at Risk: A Map-Based Indicator of Threats to the World’s Coral Reefs. Reefs at Risk Revisited uses a global map of coral reefs at 500-m resolution, which is 64 times more detailed than the 4-km resolution map used in the 1998 analysis, and benefits from improvements in many global data sets used to evaluate threats to reefs (most threat data are at 1 km resolution, which is 16 times more detailed than those used in the 1998 analysis).
Between September 10, 2013 – October 3, 2013 the Khaled bin Sultan Living Oceans Foundation conducted a
research mission to Tonga, focusing on coral reefs surrounding the islands in the Ha'apai group (Sep 11-21),
Vava'u (Sep 22-28) and Niuaatoputapu (Sep 29-Oct 1). The mission included coral reef assessments, coral reef
research, habitat mapping, and educational activities. The objectives of the mission were to:
Status of the Coral Reefs in the Pacific and Outlook. Reports by the Global Coral Reef Network in collaboration with UNEP, IUCN and other agencies