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,

Authorities in Australia say they have decided to shut nine beaches while they investigate the unusual grey and white balls.

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.