1 million tons of Fukushima debris floating near US West Coast?

Over a million tons of Fukushima debris could be just 1,700 miles off the American coast, floating between Hawaii and California, according to research by a US government agency.

The National Oceanic and Atmospheric Administration (NOAA) recently updated its report on the movement of the Japanese debris, generated by the March 2011 tsunami, which killed 16,000 people and led to the Fukushima nuclear power plant meltdown.

Seventy percent of an estimated 5 million tons of debris sank near the coast of Japan, according to the Ministry of Environment. The rest presumably floated out into the Pacific.

While there are no accurate estimates as to where the post-tsunami junk has traveled so far, the NOAA has come up with a computer model of the debris movement, which gives an idea of where its highest concentration could be found.

That area is crosshatched at the NOAA model below and resembles an island quite near the US shore.

The NOAA graphics have led to numerous media reporting about an island of rubbish moving towards the US.

The agency was forced to alleviate the concerns in an article saying there was “no solid mass of debris from Japan heading to the United States.”

“At this point, nearly three years after the earthquake and tsunami struck Japan, whatever debris remains floating is very spread out. It is spread out so much that you could fly a plane over the Pacific Ocean and not see any debris since it is spread over a huge area, and most of the debris is small, hard-to-see objects,” NOAA explains on its official webpage.

The agency has stressed its research is just computer simulation, adding that “observations of the area with satellites have not shown any debris.”

Despite the fact the tsunami debris is scattered and does not form a solid mass, the researchers still believe it’s a serious matter to keep an eye on.

Scientists are particularly interested in the organisms that could be living on objects from Japan reaching the west coast.

"At first we were only thinking about objects like the floating docks, but now we’re finding that all kinds of Japanese organisms are growing on the debris," John Chapman of the Marine Science Center at Oregon State University told Fox News.

"We've found over 165 non-native species so far," he continued. "One type of insect, and almost all the others are marine organisms … we found the European blue mussel, which was introduced to Asia long ago, and then it grew on a lot of these things that are coming across the Pacific ... we’d never seen it here, and we don’t particularly want it here."

The worst-case scenario would be that the trash is housing invasive organisms that could disrupt the local environment’s current balance of life. Such was the case in Guam, where earlier this year it was announced that the US government intended to parachute dead mice laced with sedatives on to the island in order to deal with an invasive species of brown tree snake that was believed to have been brought to the American territory on a military ship over 60 years ago. In a little over half a century, a few snakes spawned what became an estimated 2 million animals, the likes of which ravaged the island’s native bird population and warranted government intervention.

Other concerns such as radiation, meanwhile, have been downplayed. On its website, the NOAA says, “Radiation experts agree that it is highly unlikely that any tsunami-generated marine debris will hold harmful levels of radiation from the Fukushima nuclear emergency.”

Independent groups like the 5 Gyres Institute, which tracks pollution at sea, have echoed the NOAA’s findings, saying that radiation readings have been “inconsequential.” Even the release of radioactive water from the Fukushima nuclear reactor shouldn't be a grave concern, since scientists say it will be diluted to the point of being harmless by the time it reaches American shores in 2014.