61 leafy seadragons, 604 Port Jackson sharks: logging the grim tally of death in South Australia’s algal bloom

Tue, 2 Sep 2025 18:12:30 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://www.theguardian.com/environment/2025/sep/01/61-leafy-seadragons-604-port-jackson-sharks-logging-the-grim-tally-of-death-in-south-australias-algal-bloom>

"Sixty-one leafy seadragons, 604 Port Jackson sharks, 1,999 southern fiddler
rays and 287 bluespotted goatfish make up a fraction of the dead washed up on
South Australian beaches in the past months.

Since the algal bloom hit SA, hundreds of citizen scientists have come together
to create what has become one of the main sources of data on the disaster.

Now more than 34,000 dead marine animals and fish have been logged by more than
900 observers – while, of course, far more have gone unobserved.

The bloom crept around the coast in March, unnoticed by most, until a surfer,
Anthony Rowland, gave a colourful description of his and his mates’ hacking
coughs after being in the water at Waitpinga, raising the alarm.

Next, pictures emerged of a mysterious, scummy foam on nearby beaches.

Then an algal bloom community, determined to do what they could, started to
take shape."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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