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,

Sydney’s pumping of primary-treated effluent into the ocean makes us out of step with the rest of the world, a water engineering expert said.

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.