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http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10780372
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"Plastics can be mistaken for food by marine animals which then suffer such effects as starvation, dehydration, poisoning and other painful conditions often leading to their death.
Sea turtles for example mistake plastic bags for their jelly fish prey. Sea birds also consume plastic which can resemble small fish. Autopsies of albatross have shown large amounts of plastic contained in their stomachs.
As floating plastic breaks down into smaller pieces it is consumed by plankton feeders, also with disastrous results.
Marine mammals such as dolphins, whales and seals as well as seabirds have been reported entangled in marine rubbish. Discarded fishing equipment and the plastic rings that hold bottles of water together are common examples of this danger. As rubbish sinks to the sea floor it then smothers smaller creatures, blocking out light and preventing the uptake of nutrients.
Orange peel: 2 years
Cigarette butts: 1-5 years
Plastic bags: 20-50 years
Tin cans: 50 years
Aluminium cans: 80-100 years
Plastic bottles: 250 years
Glass: I million years"
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