Several Sydney beaches have been reopened since they were closed by the discovery of black “tar balls”.

Bondi, Bronte, and Tamarama beaches have been reopened after an inspection found that all three beaches were clear of the mysterious debris.

Mayor of Waverley Council Will Nemesh, said community safety would remain the top priority.

“The safety of our community is always paramount.,” Nemesh said.

“Working with Government authorities, we will continue to monitor the situation closely and keep the community updated and safe.” 

Coogee, Gordons Bay, North Maroubra, and Clovelly beaches remain closed until further notice.

Tests conducted by Randwick City Council suggested the debris was a phenomenon known as “tar balls”, the council announced on Wednesday.

However, the EPA has not yet been able to confirm those findings.

“While we understand initial Randwick City Council testing suggests the presence of hydrocarbon, at this stage EPA tests cannot confirm the contents,” the EPA said.

“At this stage, the origin and contents of the balls remains a mystery. But the EPA is conducting extensive testing on a number of samples.”

A tar ball is a small blob of oil that has been weathered and shaped after floating in the ocean for a period of time.

The origin of the tar balls remains a mystery as investigations continue.

Source Credit: 9 News Sydney