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Algal Bloom Devastates South Australia’s Coorong Ecosystem

6/5/2025

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Summary

Story summary

A troubling algal bloom caused by the Karenia mikimotoi species is wreaking havoc in South Australia. Despite cooling sea temperatures, a marine heatwave lingers, impacting the Coorong and its wildlife. The combination of nutrient-rich flood runoff and cold-water upwelling has led to a surge in fish kills since late May, raising alarms for the ecosystem.

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Story summary

A troubling algal bloom caused by the Karenia mikimotoi species is wreaking havoc in South Australia. Despite cooling sea temperatures, a marine heatwave lingers, impacting the Coorong and its wildlife. The combination of nutrient-rich flood runoff and cold-water upwelling has led to a surge in fish kills since late May, raising alarms for the ecosystem.