Summary
- Mystery tar balls have washed up on Sydney beaches, forcing the closure of seven beaches, including Bondi beach.
- Authorities are working to identify the source of the tar balls, which are believed to be hydrocarbon-based pollutants.
- The public has been warned not to touch or go near the debris found on the beaches.
- Investigations and clean-up efforts are ongoing with collaboration between local council, EPA, and other relevant authorities.