The beaches will be closed “until further notice” as the EPA works to identify the cause of bizarre debris that has washed ashore.

Nine Sydney beaches, including Manly, were closed after mysterious white and grey debris washed ashore during peak holiday season.

A number of northern beaches have been closed after ball-shaped debris was found in the sand, following similar balls being discovered on eastern...

A number of northern beaches have been closed after ball-shaped debris was found in the sand, following similar balls being discovered on eastern...

A number of northern beaches have been closed after ball-shaped debris was found in the sand, following similar balls being discovered on eastern...

Surf Life Savers closed the beaches just before 10.30am.

Sydney’s Northern Beaches council said decision to reopen was made on criteria provided by the EPA. Follow today’s news live

Experts are calling for an upgrade of Sydney’s sewage system after a second round of beaches were closed upon the discovery of balls of debris...

Experts are calling for an upgrade of Sydney’s sewage system after a second round of beaches were closed upon the discovery of balls of debris...