1.7 wc/kg for the top 3 inches of soil. Similar samples from Enibuk Island, Ailinginae Atoll, averaged 0.61 yo/kg. The decline curves and the chemical separations show a great variability in the materials contributing to the radioactivity of the various samples. In the samples separated chemically, sr90 ig virtually absent in the coconuts and in the marine animals sampled, but constitutes 2 - 5 percent of the total activity in other land plants and 50 percent of the skeletal salts of the land crabs. Radiocesium was found in only small amounts in marine ani- mals, but accounted for up to 100 percent of the activity in some of the land plants. The marine animals contained more Ce 144 than the land plants. oe] Fission products do not account for all of the activity in most samplea.-