The Northern Beaches Council said that efforts were underway to safely remove the debris. Meanwhile, Local authorities collaborated with the state’s environmental agency to investigate the matter.

Months after mysterious black balls forced the closure of some of Sydney's most famous beaches, small marble-like debris has begun washing up on the city's shores again. The balls - this time grey or white in colour - have prompted councils to shut nine beaches, including popular Manly and Dee Why, while authorities investigate.

SYDNEY, Jan 14 (Bernama-dpa) -- Nine Sydney beaches were shut after ball-shaped debris washed up along the shore, local authorities said on Tuesday, reported German news agency (dpa). The beaches shut due to the discovery of the "white/grey, ball-shaped debris" including iconic Manly in Sydney's Northern Beaches.

Beaches in Sydney, Australia, were closed to bathers after small white and grey balls of debris washed up on the shores at the height of the summer holiday season.

Sydney’s iconic beaches are famous worldwide for their golden sand and pristine waters. They attract millions of tourists every year, but this time, they have drawn the attention of researchers and local authorities for an unusual reason.

On Tuesday, 14th January, nine beaches in Sydney were closed to swimmers due to mysterious balls washing ashore. Local authorities have already taken measures to identify these objects of unknown origin.

Australian authorities closed nine Sydney beaches on Tuesday after mysterious white and grey spherical objects washed up along the coast.