The Pu and Am concentrations are higher at expected from global fallout, but the levels in the atolls the muscle species of reef fish are only slightly higher than fallout and islands tissue levels. than of certain A source of these radionuclides, in addition to global fallout, is residual material in the sediments and coral that was deposited during the test years. . However, the estimated doses from Pu and Am are a very small fraction of the estimated total doses via the marine pathway, which in turn are only a small fraction of the current guidelines. 14