Sydney, Australia (AFP) – Hundreds of mysterious black tar-like balls have washed up on two popular Sydney beaches, prompting lifeguards to close the strands to swimmers.

“Mysterious, black, ball-shaped debris” began appearing on Coogee Beach on Tuesday afternoon the local mayor said, leaving flummoxed Australian authorities scrambling to find out what they might be, and where they may have come from.

Hundreds of golf-to-cricket-ball-sized spheres could be seen littering the coast, which is usually thronged with Sydneysiders and tourists.

Instead, a few seagulls wandered among the spheres, pecking and examining.

The balls were also spotted at nearby Gordon’s Bay, an aquatic reserve popular for snorkelling and fishing, which was also closed.

“At this stage, it is unknown what the material is,” Mayor Dylan Parker said in a social media post.

“However, they may be ‘tar balls’ which are formed when oil comes in to contact with debris and water, typically the result of oil spills or seepage.”

arb/ssy

© Agence France-Presse

Featured image credit: kjpargeter | Freepik

Satellite Image: David Glacier, Drygalski Ice Tongue, Antarctica
Image of the day: Antarctica’s ice tongue carves into the Ross SeaNews

Image of the day: Antarctica’s ice tongue carves into the Ross Sea

In this Sentinel-2 image from 17 March 2025, Antarctica’s David Glacier is seen feeding the Drygalski Ice Tongue – a long, blade-like structure slicing nearly…
Muser NewsDeskMuser NewsDeskJuly 22, 2025 Full article
Image
New model uses satellite imagery, machine learning to map flooding in urban environmentsClimateScience

New model uses satellite imagery, machine learning to map flooding in urban environments

By Joey Pitchford | North Carolina State University As climate change causes storms to intensify, new tools are needed to map where flooding occurs in…
SourceSourceJuly 31, 2024 Full article
Image: Greenland wood map
Greenland votes under shadow of TrumpNews

Greenland votes under shadow of Trump

Nuuk, Denmark | AFP Greenland, the Danish self-governing territory coveted by US President Donald Trump, votes Tuesday in legislative elections that could yield a timeline…
SourceSourceMarch 11, 2025 Full article