The highly radioactive boars have been reported to attack people when provoked and have become a major problem in the Japanese government's efforts to prepare the towns for the eventual homecoming of its former, human residents.
The anniversary comes as Prime Minister Shinzo Abe's government and electric companies are actively seeking to restart nuclear plants shut down following the disaster.
"Many may be forced to return to contaminated communities against their wishes because they can not afford to stay where they are now living". The meltdown of the nuclear plant forced thousands of residents to abandon their homes and leave their pets and livestock behind.
In Fukushima, mandatory evacuation orders will be lifted in some areas surrounding the nuclear plant this spring, while decommissioning work at the crippled facilities and decontamination operations in the wider areas within the prefecture continue.
After people deserted the towns, wild boars emerged from local forests to scavenge for food and, according to local media, have flourished.
Wild boars with high radiation levels have been running northern Japanese towns.. Now reproducing with reckless abandon, the wild boar population has jumped 300 per cent since the disaster, reaching an estimated 13,000 individuals.
Officials also must figure out what to do with the radioactive boar bodies.
Sakamoto uses rice flour as bait to tempt the boars into cages explaining: 'After people left, they began coming down from the mountains and now they are not going back.
"It is not really clear now which is the master of the town, people or wild boars", said Namie's mayor, Tamotsu Baba. They found plenty of food, and no one will come after them. And when they do return they'll also have to face up to wild boars that have taken up residence since humans moved away. These meat of these feral pigs are considered a delicacy in Northern Japan, but because of the risky levels of contamination, they are unsafe to eat as cesium-137 can cause radiation sickness and increase cancer risk.