Peer pressure and mutual monitoring continue even after the immediate harvest of fish resources. Inoue et al. (2009) provide two interesting cases in two wards in Hokkaido. Fishers of the FCA at Bekkai ward are required to grade surf clams (as large or extra-large) as they transfer the clams from fishing boats to boxes marked with their names. Fishers of the FCA at Ochiishi ward, who know each other, stand in three lines as they upload clams. Thus, fishers are unable to mix clams of different lengths or set aside clams for unlawful marketing because of mutual monitoring and peer pressure in both cases (Inoue et al., 2009).