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Story summary
- South Australia recorded over 8,000 shark, ray, skate and stingaree deaths during a toxic algal bloom.
- The bloom killed about 4,460 southern fiddler rays and 850 Port Jackson sharks.
- In total, deaths involved 31 species, including endangered coastal stingarees.
- Prof. Charlie Huveneers warned the bloom could collapse local shark and ray populations.
- Citizen scientists and divers supplied mortality data for the state environment department’s recovery assessment.