On October 15, 2024, mysterious black, ball-shaped debris, likely tar balls, were discovered along Coogee Beach, Australia. Tar balls formed as a result of oil spills, mixing oil with seawater, sand, and debris into a hardened substance. Their size ranged from small pebbles to fist-sized, with surfaces that varied from smooth to rough. They posed environmental risks to marine life and human health due to toxic components like polycyclic aromatic hydrocarbons (PAHs).
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