Marine experts say a series of consecutive low tides over the past week has driven seawater temperatures to dangerous levels, creating anoxic conditions that threaten fish and other marine life.
According to Reef Explorer Fiji director Victor Bonito, seawater temperatures along affected coastal areas have averaged around 30 degrees Celsius, with peaks reaching 36 degrees during extreme low tides.
“These elevated temperatures reduce dissolved oxygen levels in the water,” Dr Bonito said.
“The result is anoxic conditions, which can be fatal for reef fish and other marine organisms.”
He explained that prolonged exposure to warm, shallow water during low tides places severe stress on reef ecosystems, particularly in nearshore and lagoon areas where water circulation is limited.
The conditions have coincided with reports of dead reef fish washing up along parts of the Coral Coast and Kadavu, with authorities continuing investigations into the incidents.
Dr Bonito warned that such events are becoming more frequent and serve as a clear signal of climate change impacts on Fiji’s marine environment.
“Corals and reef fish are on the front line of climate change,” he said.
