The marble-sized white and grey balls were tested and discovered to contain "saturated fatty acids, along with fecal coliforms and E-coli." ...

Months after mysterious black balls forced the closure of some of Sydney's most famous beaches, small marble-like debris ... The balls - this time grey or white in colour - have prompted councils ...

Nine beaches in Sydney were shut down for visitors on Tuesday after mysterious white and grey marble-sized balls ... were closed to visitors after small black balls washed up on the shore.