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.

Workers have cleaned up and reopened seven of nine northern Sydney beaches after mysterious balls washed ashore.

On Tuesday, January 14, nine beaches in Sydney were closed to swimmers due to mysterious balls washing ashore. Local authorities are already trying to determine the origin of these unknown findings. Ocean beaches in Sydney,

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.

All but one of the nine major north Sydney beaches which were closed this week after mysterious ball shaped debris washed up on the sands have now reopened.

These balls are different from the last time, a few months ago

Nine beaches along Sydney's Northern Beaches have closed for precautionary reasons after numerous tiny balls were found washed up on the shoreline.

Nine beaches in Sydney, including the well-known Manly beach, were closed to swimmers on Tuesday after small white and grey balls of debris washed up on the shores.

Sydney’s popular beaches, including Manly, were closed after marble-sized white and grey balls of debris were discovered washing ashore. This marks the latest mysterious incident in a series of similar occurrences in recent months.

Nine beaches in Sydney’s north have been closed after mysterious balls of debris washed ashore. The marble-sized balls of debris washed up on Tuesday, the Northern Beaches Council said, prompting the closure of nine popular beaches.