<div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Debris balls have washed up on several NSW beaches again, but authorities are unsure whether they are related to the ones that were previously found along dozens of Sydney beaches.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The Central Coast Council confirmed the balls were found at The Entrance Beach, Grant McBridge Baths, Blue Bay Beach, Toowoon Bay Beach, North Shelly Beach, Shelly Beach and Blue Lagoon Beach.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The Grant McBride Baths have been temporarily shut.</span></div></div><div><div id="adspot-mobile-medium"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE: </span></strong><a href="https://www.9news.com.au/world/hidden-moon-found-orbiting-uranus/73936309-029d-45d0-ab1a-43de1bf1879a" rel="" target="_blank" title=""><strong><span>Giant planetary neighbour's hidden secret revealed</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Beachgoers are advised to avoid going to the affected sites and not to touch the debris.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The debris balls are grey-coloured, ranging in size from one to four centimetres.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>According to the Central Coast Council, it is unclear whether these debris balls are related to the ones that washed up on Sydney beaches from October to January.</span></div></div><div><div class="OUTBRAIN" data-reactroot="" data-src="//www.9news.com.au/national/nsw-central-coast-debris-balls-wash-up-on-beaches/f4fd705c-bd6c-421d-b971-eeaf0ec3543e" data-widget-id="AR_5"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Samples have been collected for testing, but the composition and source of the material are not yet known. </span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The debris balls could be from a variety of sources, like stormwater, sewerage or ships. </span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE: </span></strong><a href="https://www.9news.com.au/national/sydney-nsw-rain-flood-risk-forecast-warnings-updates/01a8b26d-c110-46a6-8f1e-dcec52c7bd7e" rel="" target="_blank" title=""><strong><span>Major dam expected to spill 15 billion litres a day after huge rain</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The NSW Environment Protection Authority has been notified.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Investigations and clean-up are currently underway.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Black-coloured debris balls first appeared in Coogee, in Sydney's east, in October before dozens more started popping up along the coastline up until January. </span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The Environment Protection Authority investigated and found the </span><a href="https://www.9news.com.au/national/sydney-water-sewage-treatment-site-likely-source-of-debris-balls-on-nsw-beaches/b3f77ab8-8d64-4598-b929-093e2a353752" rel="" target="_blank" title="likely source of these balls was Sydney Water's land-based sewage treatment"><span>likely source of these balls was Sydney Water's land-based sewage treatment</span></a><span> network.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The definite source still has not been determined.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><a href="https://www.9news.com.au/national/how-to-follow-9news-digital/29855bb1-ad3d-4c38-bc25-3cb52af1216f"><em><strong><span>DOWNLOAD THE 9NEWS APP</span></strong></em></a><em><strong><span>: Stay across all the latest in breaking news, sport, politics and the weather via our news app and get notifications sent straight to your smartphone. Available on the</span></strong></em><span> </span><a href="https://apps.apple.com/au/app/9news/id1010533727"><em><strong><span>Apple App Store</span></strong></em></a><span> </span><em><strong><span>and</span></strong></em><span> </span><a href="https://play.google.com/store/apps/details?id=nineNewsAlerts.nine.com&amp;hl=en_AU&amp;pli=1"><em><strong><span>Google Play</span></strong></em></a><em><strong><span>.</span></strong></em></div></div>