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SEAPLEX researchers spotted a large net tangled with plastic in the "garbage patch." Credit: Scripps Institution of Oceanography
SAN DIEGO, California -- Scientists have just completed an unprecedented journey into the vast and little-explored "Great Pacific Ocean Garbage Patch."
On the Scripps Environmental Accumulation of Plastic Expedition (SEAPLEX), researchers got the first detailed view of plastic debris floating in a remote ocean region.
It wasn't a pretty sight.
The Scripps research vessel (R/V) New Horizon left its San Diego homeport on August 2, 2009, for the North Pacific Ocean Gyre, located some 1,000 miles off California's coast, and returned on August 21, 2009.
Scientists surveyed plastic distribution and abundance, taking samples for analysis in the lab and assessing the impacts of debris on marine life.
Before this research, little was known about the size of the "garbage patch" and the threats it poses to marine life and the gyre's biological environment.
The expedition was led by a team of Scripps Institution of Oceanography (SIO) graduate students, with support from University of California Ship Funds, the National Science Foundation (NSF) and Project Kaisei.
"SEAPLEX was an important education experience for the graduate students, and contributed to a better understanding of an important problem in the oceans," said Linda Goad, program director in NSF's Division of Ocean Sciences. "We hope that SEAPLEX will result in increased awareness of a growing issue."
After transiting for six days aboard the research vessel, the researchers reached their first intensive sampling site on August 9th.
Team members began 24-hour sampling periods using a variety of tow nets to collect debris at several ocean depths.
"We targeted the highest plastic-containing areas so we could begin to understand the scope of the problem," said Miriam Goldstein of SIO, chief scientist of the expedition. "We also studied everything from phytoplankton to zooplankton to small midwater fish."
The scientists found that at numerous areas in the gyre, flecks of plastic were abundant and easily spotted against the deep blue seawater.
Among the assortment of items retrieved were plastic bottles with a variety of biological inhabitants. The scientists also collected jellyfish called by-the-wind sailors (Velella velella).
On August 11th, the researchers encountered a large net entwined with plastic and various marine organisms; they also recovered several plastic bottles covered with ocean animals, including large barnacles.
The next day, Pete Davison, an SIO graduate student studying mid-water fish, collected several species in the gyre, including the pearleye (Benthalbella dentata), a predatory fish with eyes that look upward so it can see prey swimming above, and lanternfish (Tarletonbeania crenularis), which migrate from as deep as 700 meters down to the ocean surface each day.
By the end of the expedition, the researchers were intrigued by the gyre, but had seen their fill of its trash.
"Finding so much plastic there was shocking," said Goldstein. "How could there be this much plastic floating in a random patch of ocean--a thousand miles from land?"
Views expressed in this article do not necessarily reflect those of UnderwaterTimes.com, its staff or its advertisers.
Reader Comments
2 people have commented so far.This garbage pile makes me sick. Its hard to change how we live. We can never go back, I dont see this proplem ever being fixed. We have gone way to far.
comment# 1 - lauren · westerly,america · Nov 17, 2009 @ 7:39pm
More detail regarding how the ecosystem is managing the plastic would be valuable. The article states that numerous organisms are living on the plastic. Was the trash actually providing a benefit to some? Obviously entanglement hazard and chemical leaching of garbage are major concerns. But cured plastic is generally chemically inert and could provide a hard surface for colonization, thereby increasing biodiversity and bioquantity in the mid ocean environs. One major concern, of course, is that predator organisms ingest the plastic which ultimately kills them by blocking their gastrointestinal tract. We have not gone too far and there are many ways to fix the problem. The difficult part is changing the current short term management attitude both business AND people. A miniscule fee charged to plastic producers would provide sufficient funding to remove much of the plastic from the gyre. Municipal recycling programs also keep much of the plastic out of the ecosystem. Such recycling programs are not usually cost effective and therefore not overly popular with a lot of the voters, particularly in areas were government intervention in daily activities is barely tolerated.
comment# 2 - tnnaut · vancouver canada · Oct 28, 2010 @ 9:18am