Sceale Beach in South Australia's West Coast among top three of cleanest beaches in Australia PRISTINE: Sceale Bay Surf School instructor Emma Campion enjoys a surf on the West Coast beach. Picture: Andrew Brooks Source: Supplied SCEALE BAY on the state's West Coast is among Australia's cleanest beaches, a world-first study has found. The National Marine Debris Project assessed more than 170 beaches at 100km points around Australia for the past two years. Sceale Bay, south of Streaky Bay, was found to have the least rubbish in SA while Border Village, on the SA-WA border was our dirtiest. The CSIRO and Earthwatch Australia project found Cape Leveque, north of ­Broome, and Hamelin Pool in Shark Bay, were among the "cleanest" beaches surveyed, with no debris found. READ MORE: Rating our best holiday towns Some of the dirtiest were Two Rocks Beach in WA, Barry Road Beach in Victoria, Cape Arnhem in the NT, Ocean Beach in Tasmania, South Mission Beach in Queensland and Shelley Beach in Manly, NSW. Sceale Bay Beach. The dirtiest beaches were found to have about 400 ­pieces of debris. Funded by Shell, the study was undertaken to identify and understand the threat marine debris poses to Australian wildlife and the ecosystems. By mapping where and how rubbish is accumulating along our coastlines, the researchers hope to provide government, policy makers and the public with effective ways to reduce the amount of garbage reaching oceans and waterways. READ MORE: Our best beach on Lonely Planet guide Researchers will provide a list of species that are most at risk from marine debris. CSIRO research scientist Denise Hardesty said plastic bags were the biggest problem. "One of the recent findings we have, as we've completed the coastal surveys, is that we estimate there are more than six pieces of rubbish on our beaches for every single person in Australia," she said. I think it is shocking and surprising when you head out on a project like this and you visit these stunning remote beaches around the country and find garbage everywhere. The study has also found that most debris on Australian beaches comes from within Australia - currents off every state wash local debris back to shore. The researchers also found there were fewer bottles on SA beaches, which they thought might be due to the state's container deposit scheme.