Uploaded August 2025 | Updated September 2026, 2 weeks ago
For the past four months, South Australia’s mid-coast has been quietly suffocating. A 4,500-square-kilometre algal bloom, one of the largest on record, has blanketed the Fleurieu Peninsula, turning once-pristine surf zones into apocalyptic shorelines lined with brown sludge and thick, yellow foam.
It’s decimated marine life and sidelined the region’s surf community, many of whom are still waiting for someone in power to acknowledge what’s happening.
So far, an estimated 13,800 animals, from Great Whites to seahorses, have died trying to escape the toxic water.
For the past four months, South Australia’s mid-coast has been quietly suffocating. A 4,500-square-kilometre algal bloom, one of the largest on record, has blanketed the Fleurieu Peninsula, turning once-pristine surf zones into apocalyptic shorelines lined with brown sludge and thick, yellow foam.
It’s decimated marine life and sidelined the region’s surf community, many of whom are still waiting for someone in power to acknowledge what’s happening.
So far, an estimated 13,800 animals, from Great Whites to seahorses, have died trying to escape the toxic water.




