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Australia's Historic Algal Bloom Devastates Marine Life and Health

3/15/2026

35 6 Full Breakdown

Summary

Story summary

Australia faces its largest algal bloom in history, covering about 20,000 square kilometers of coastline, caused by the toxic algae Karenia cristata.
The bloom has killed millions of marine creatures and severely reduced leafy sea dragon populations.
In some areas only one or two leafy sea dragons remain.
Commercial fishing has halted.
Residents report coughs and headaches.

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Story summary

Australia faces its largest algal bloom in history, covering about 20,000 square kilometers of coastline, caused by the toxic algae Karenia cristata.
The bloom has killed millions of marine creatures and severely reduced leafy sea dragon populations.
In some areas only one or two leafy sea dragons remain.
Commercial fishing has halted.
Residents report coughs and headaches.