Sydney’s popular Manly Beach and other beaches around the Australian city were closed on Tuesday as authorities investigated marble-sized balls of white and gray debris that had washed on shore, in the latest such mysterious incident in recent months.

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

Nine beaches in Sydney’s north have been closed after mysterious debris balls washed up on the shoreline. Welcome back to The Daily Aviation for a feature on how the US Air Force maintains and operates its many C-17 Globemaster cargo aircraft around the world.

Manly, Dee Why, Long Reef, Queenscliff, Freshwater, North and South Curl Curl, North Steyne and North Narrabeen beaches have been closed. It comes after seven beaches including Bo