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Whyalla wipeout fears: cuttlefish usually gather in their thousands, but few have appeared since a massive algal bloom
environment

Whyalla wipeout fears: cuttlefish usually gather in their thousands, but few have appeared since a massive algal bloom

The Guardian Environment · Jun 22, 2026, 3:10 PM

Why this matters: environmental and climate reporting with long-term consequences.

Divers have observed just a ‘couple of dozen’ of the cephalopods along the heritage-listed Cuttlefish Coast in South Australia, causing locals and marine scientists to worry Follow our Australia news live blog for latest updates Get our breaking news email, free app or daily news podcast Mid-June is usually the peak time for giant Australian cuttlefish to gather near Whyalla, in South Australia’s Spencer Gulf.Nearly every year, they come in their thousands – and sometimes hundreds of thousands – to assemble in the shallows to breed. It’s a globally unique natural phenomenon, celebrated locally as “Cuttlefest”. Continue reading...

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