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High Radiation Levels Found in Fish in Pacific

Despite an announcement Tuesday that TEPCO has stopped leaks of high radiation water from the crippled Fukushima Dai-ichi nuclear plant into the Pacific Ocean, fishermen in Japan have found fish with high radiation levels swimming off the coast.

 Japan authorities said the high levels were predominantly in one species of tiny fish, the Wall Street Journal reports. Samples were taken from two separate fish caught before the radioactive water dumping process began, increasing fears for the radioactive water spreading significantly and affecting marine life.

The water dumping process began after workers discovered an uncontrolled leak at the nuclear plant.

Attempts to stem the leak by injecting 400 gallons of "water glass," or sodium silicate, and another agent near the seaside pit where the water was leaking appeared to have been successful, according to Naoki Tsunoda, spokesman for Tokyo Electric Power Co.

The announcement comes after reports that samples taken seawater near one of the plant's reactors contained contained 7.5 million times the legal limit for radioactive iodine on April 2. Two days later, that figure dropped to 5 million.

TEPCO said in a statement that even those large amounts would have "no immediate impact" on the environment but added that it was working to stop the leak as soon as possible.

The readings released Tuesday were taken closer to the plant than before -- apparently because new measuring points were added after the crack was discovered -- and did not necessarily reflect a worsening of the contamination. Other measurements several hundred yards away from the plant have declined to levels about 1,000 times the legal limit -- down from more than four times that last week.

Playgrounds in the Fukushima area will be tested for radiation, the Daily Telegraph reports.

Radiation measuring equipment will be installed at nearly 1,400 schools as students return to classes, the local government told the U.K. paper.

The government set its first radiation safety standards for fish Tuesday after Japan's tsunami-ravaged nuclear plant reported radioactive contamination in nearby seawater measuring at several million times the legal limit.

The plant operator insisted that the radiation will rapidly disperse and that it poses no immediate danger, but an expert said exposure to the highly concentrated levels near the Fukushima Dai-ichi plant could cause immediate injury and that the leaks could result in residual contamination of the sea in the area.

The new levels coupled with reports that radiation was building up in fish led the government to create an acceptable radiation standard for fish for the first time. Some fish caught Friday off Japan's coastal waters would have exceeded the new provisional limit.

"Even if the government says the fish is safe, people won't want to buy seafood from Fukushima," said Ichiro Yamagata, a fisherman who used to live within sight of the nuclear plant and has since fled to a shelter in Tokyo.

"We probably can't fish there for several years," he said.

Radiation had been leaking into the Pacific near the plant on the northeastern Japanese coast since a 9.0-magnitude earthquake spawned a massive tsunami that inundated the complex. Over the weekend, workers there discovered a crack where highly contaminated water was spilling directly into the ocean.

The tsunami pulverized about 250 miles of the northeastern coast, flattening whole towns and cities and killing up to 25,000 people. Tens of thousands more lost their homes in the crush of water, and several thousand were forced from the area near the plant because of radiation concerns.

Many of those "radiation refugees" have grown frustrated with the mandatory 12-mile no-go zone, and plant operator Tokyo Electric Power Co. -- whose stock value has plunged to the lowest level in its 60-year history -- said Tuesday it would give affected towns $240,000 each. That would be on top of any legally required compensation.

Experts agree that radiation dissipates quickly in the vast Pacific, but direct exposure to the most contaminated water measured would lead to "immediate injury," said Yoichi Enokida, a professor of materials science at Nagoya University's graduate school of engineering.

He added that seawater may be diluting the iodine, which decays quickly, but the leak also contains long-lasting cesium-137. Both can build up in fish, though iodine's short half-life means it does not stay there for very long. The long-term effects of cesium, however, will need to be studied, he said.

"It is extremely important to implement a plan to reduce the outflow of contaminated water as soon as possible," he said.

Although the Fukushima prefecture surrounding the plant is not a major fishing region, fishermen there are growing alarmed. No fishing is allowed in the direct vicinity of the plant, but they fret that demand will collapse for catches elsewhere in the region -- whether or not they are contaminated.

"Our prefecture's fisherman have lost their lives, fishing boats, piers and buildings" in the earthquake and tsunami and now must suffer the added effects of radioactive runoff from the plant, local fishermen's federation head Tetsu Nozaki said in a letter faxed to the company.

Some government assurances of safety have done little to quell panic. In Tokyo, for instance, there were runs on bottled water after officials said radiation in tap water there was above the level considered safe for infants, though insisted it was still OK for adults.

On Tuesday, officials decided to apply the maximum allowable radiation limit for vegetables to fish, according to Edano.

"We will conduct strict monitoring and move forward after we understand the complete situation," he said.

The move came after the health ministry reported that fish caught off Ibaraki prefecture -- which is about halfway between the plant and Tokyo -- contained levels of radioactive iodine that would have exceeded the new provisional limit. Cesium also was found, at just below the limit. The fish were caught Friday, before the new provisional safety limits were announced.

Such limits are usually very conservative. After spinach and milk tested at levels far exceeding the safety standard, health experts said you would have to eat enormous quantities of tainted produce or dairy before getting even the amount of radiation contained in a CT scan.

Radioactivity poured into the ocean, in part, because workers at the plant were forced to use a makeshift method of bringing down temperatures and pressure by pumping water into the reactors and allowing it to gush out wherever it can. It is a messy process, but it is preventing a full meltdown of the fuel rods that would release even more radioactivity into the environment.

The government on Monday gave the go-ahead to pump more than 3 million gallons of less-contaminated water into the sea -- in addition to what is leaking -- to make room at a plant storage facility to contain more highly radioactive water.

The Associated Press contributed to this report.

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