Sea dragon populations decimated in ‘mind-blowing’ mass mortality event caused by South Australian algal bloom

A massive algal bloom in South Australia has caused the deaths of thousands of sea dragons, seahorses, and pipefishes. Ecologists describe this as the worst mass mortality event for this fish family globally, with impacts lingering for over a year.
Why it matters
The event represents a significant ecological disaster for unique Australian marine biodiversity and highlights the long-term impacts of toxic algal blooms.
Weedy sea dragons, found only in Australia, were among the first mortalities observed washing up on South Australian beaches as the algal bloom spread up and down the coast. Photograph: Stefan Andrews/Great Southern Reef Foundation Weedy sea dragons, found only in Australia, were among the first mortalities observed washing up on South Australian beaches as the algal bloom spread up and down the coast. Photograph: Stefan Andrews/Great Southern Reef Foundation Australian climate and environmental reporting South Australian algal bloom Sea dragon populations decimated in ‘mind-blowing’ mass mortality event caused by South Australian algal bloom Thousands of sea dragons, pipefishes and seahorses have washed up along state’s coastline according to analysis of citizen scientist records
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