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The Guardian - AU
The Guardian - AU
Environment
Petra Stock

Are surging shark sightings and strandings linked to South Australia’s toxic algal bloom?

South Australia SA Charlie Huveneers Le Busque
Gummy shark lies dead on sand and in foamy water on a beach
A gummy shark at Nepean Bay. More than 200 marine species have been reported killed by a toxic algal bloom that has affected large parts of SA’s coastline since March. Photograph: G. Matthews

Shark sightings and strandings are unusually high across South Australia amid a prolonged toxic algal bloom, but scientists say it’s too soon to link to recent shark incidents.

On Thursday, a swimmer was bitten by a shark at Port Noarlunga beach, 30km south of Adelaide’s CBD, one of a rising number of reported sharks swimming closer to shore – with some washing up dead on beaches.

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