Editing Coral bleaching severity index (section)

== Geographic / System Context ==
Coral bleaching severity is observed globally across tropical and subtropical coral reef ecosystems. These reefs are distributed primarily in shallow, sunlit waters of the Indo-Pacific, Caribbean, Red Sea, and other oceanic regions. While the index itself is not limited to a specific geographic scope, it applies to coral reef communities exposed to thermal stress events and other environmental factors that induce bleaching. The spatial variability of bleaching severity reflects local oceanographic conditions, reef composition, and historical exposure to stressors.