Research highlighted by Inter Press Service and reported by AllAfrica says most coral bleaching events in the western Indian Ocean are driven primarily by human-caused climate change rather than by El Niño. The coverage describes coral decline in the Zanzibar area, including around Jambiani, where local seaweed farmer Chiku Chande observes that corals that previously appeared brown and gold increasingly turn chalky white. The reporting frames the change as part of a broader pattern of bleaching affecting reef systems as ocean conditions shift.
While the story emphasizes that El Niño is not the main driver, it does not deny that natural climate variability can influence marine heat and reef stress. Instead, the research conclusion presented in both sources is that anthropogenic warming explains most bleaching occurrences. The outlets focus on the real-world impact of the findings for reef-dependent communities and local livelihoods, using the Zanzibar account to illustrate what bleaching looks like on the ground. The research therefore points to climate change mitigation and continued monitoring as key responses to protect coral ecosystems.
