The Ocean Health Index that includes all the Earth's oceans was first produced by the University of California Santa Barbara's (UCSB's) National Centre for Ecological Analysis and Synthesis. In its third annual update and its most comprehensive assessment to date, the Ocean Health Index rates the overall health of the Earth's oceans (high seas) at 67 out of 100. In addition, for the first time, the report assessed the Antarctic and the 15 ocean regions beyond national jurisdiction (high-seas areas), all critical regions for maintaining a healthy climate, safeguarding biodiversity and providing sustainable food sources. In the latest rating, the Antarctic and the Southern Ocean region scored 72. These distant areas had not been included in earlier assessments because they required additional data. These new rankings have helped to produce a high seas sector map showing rankings out of 100 for each area of Earth's oceans.
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