Nine beaches in Sydney, including well-known Manly beach, were closed to bathers on Tuesday after small white and grey balls ...

Nine beaches in Sydney’s north have been closed after mysterious balls of debris washed ashore. Picture: Supplied The marble-sized balls of debris washed up on Tuesday, the Northern Beaches ...

More than 40,000 marine stings are reported every year. But this could be the last summer bluebottles invade without warning.

Nine beaches in Sydney were closed on Tuesday as authorities investigated marble-sized balls of white and gray debris that had washed on shore.