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A boat constructed from thousands of plastic bottles sailed into Sydney Harbor on Monday, completing a 4-month trans-Pacific voyage to show the benefits of recycling．
The 60-foot“Plastiki”, made from 12,500 bottles, was greeted by hundreds of supporters as it ended its 15,000-kilometer journey．
“It has been a great adventure,”said the leader of the journey David de Rothschild, who comes from a well-known British banking family．“We're so excited to be here．”
The“Plastiki”－named after the 1947 Kon-Tiki raft(筏)sailed across the Pacific by Norwegian explorer Thor Heyerdahl－set off from San Francisco in March．
The boat, carrying six crew members(船員), travelled through the north Pacific and made stops in the Line Islands, Western Samoa and New Caledonia before leaving for Australia．
The“Plastiki”relied on renewable energy and got its power from sunlight and wind．They were able to keep in touch with supporters via satellite through a website, blogs, and use of social-networking-sites such as Twitter．
Captain Jo Royle said sailing the“Plastiki”was“completely different”to any other boat they had ever sailed, but“she's got here without ever a doubt in any of our minds”．
De Rothschild said the idea for the journey came to him after he read a United Nations report in 2006 that said pollution-and particularly plastic waste-was seriously threatening the world's oceans．
And while he said the influence of the voyage had gone beyond his expectations, they also faced serious problems during the voyage．
“Here you are in the middle of nowhere seeing these plastic items．They photo-degrade(光降解), get smaller and smaller, until they end up getting swallowed by fish which are then eaten by people,”he said．
The United Nations Environment Program says there is a large amount of trash in every square kilometer of the world's oceans, and another 6.4 million tons of plastic is thrown into seas each year．
The“Plastiki”will be on display at Sydney's Maritime Museum for the next month．
