South Korean food quality inspectors arrived in Japan on Monday to verify radiation inspection procedures for seafood.
Seoul has been blocking imports of marine products from Fukushima and seven other prefectures since September 2013. It will review the policy based on the team's findings this week and during a similar visit in January.
The group comprises South Korean researchers and consumer group representatives. The Japanese Fisheries Agency briefed them Monday about how fish are sampled and prepared for radiation measurements.
The inspectors are also scheduled to visit the disaster-struck Fukushima No. 1 nuclear plant during their stay through Friday.
Fisheries Agency Director General Kazuyoshi Honkawa expressed hope that South Korea will ease its import ban.
"Various foreign countries have already relaxed regulations on imports of Japanese fishery products. We expect (the team) to understand the reality and make a satisfactory report," Honkawa said.
In September last year, South Korea announced it was expanding an import ban to include all fishery products from eight prefectures, citing consumer worries over ongoing leaks at Fukushima No. 1. Seoul has also stepped up its inspections of marine products from other parts of Japan.