¶ … Pacific Garbage patch, as it's often referred to, exists between the U.S. mainland and Hawaii. Many estimates put its size at over two times larger than the state of Texas (Zhang, Zhang, Feng, and Yang, 2010). Much of this waste is composed of plastic, styrofoam, and other materials containing harmful ingredients that do not break down very quickly. In fact, much of this material ends up in the food chain due to the way it breaks down and is absorbed by organisms in the ocean. This garbage patch has been steadily growing, the product of waste dumping and pollution from the U.S., China, India, and other countries on or near the Pacific Rim. There are currently many scientists trying to both understand the true impact of the patch as well as trying to come up with ways to remedy it and prevent it from growing.
Background
The Great Pacific Garbage Patch has tripled in size since the mid-1990's and is expected to grow tenfold in the next decade if nothing is done to slow down its rate of expansion (Reid, 2007). This alarming prediction, coupled with the fact that the patch is located in a part of the world's oceans that is relatively unvisited make it difficult to believe the problem will be getting better any time soon. The area of ocean that the patch floats on has currents that spin the trash and concentrate it into a relatively specific portion of the ocean. This is where many of the world's currents combine and swirl from year to year. Author Reid (2007) writes, "It lacks the wind to attract sailing vessels, the biology to encourage fishing, and is not in the path of major shipping lanes. What little air movement there is blows inwards, further trapping the garbage. According to an article in the San Francisco Chronicle, Marcus Eriksen, a director at the Algatita Marine Research Foundation, said that "with the winds blowing in and the currents in the gyre going circular, it's the perfect environment for trapping." While the trash is in the ocean, it is doing what could be irreparable harm to sea life, the water it's in, and eventually humans." (Reid, 2007).
Right now, the patch has not garnered much attention due to the fact that humans have not been visibly harmed or affected by its existence. This will certainly change in the future as more and more of this patch is absorbed by the marine life that inhabits it and the surrounding waters. Much of the PCB's and chemical content that is broken down by the sun and wave action is absorbed by the plant life and small sea creatures (Kaiser, 2009). As these substances move up the food chain, humans will begin to ingest them through fish meat and seaweed.
Effect
The effect of the patch on the environment has not yet been fully recognized or understood. Author Reid (2007) summarizes the effect of such a patch on the food supplies and humans by stating, "Plastic resists biodegrading. Instead, a plastic shopping bag or pop bottle will photo-degrade over time, meaning that it will break down into smaller and smaller pieces but retain its original molecular composition. The result is a great amount of fine plastic sand that resembles food to many creatures. Unfortunately, the plastic cannot be digested, so sea birds or fish can eventually starve to death with a stomach full of plastic. Even if the amount of plastic in a creature's body is not enough to block the passage of food, the small pellets act as sponges for several toxins, concentrating chemicals, such as DDT, to 1 million times the normal level. This concentration then works its way up the food chain until a fish is served at our dinner table." This is a scary thought, and one that should concern everyone who enjoys seafood and products made from the sea.
Another alarming fat is that the plastics contained in the patch cannot be cleaned up due to their small size, and they are only beginning to break down due to UV exposure. These...
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