isotopes were available in greater amounts at Bogallua - carried westward from the target area by currents and wind in the lagoon. This is partially substantiated by the presence of turbid water west and southwest of the target area. It must be noted also that much of the activity at Engebi was pre-shot and probably made up of considerable inert material, bliologi- cally speaking. | A large number of dead and dying fish were geen in and close to the turbid water Flowing from the target area westward inside the lagoon between Elugelab and Bogallue eight days after the blast. There were some injured fish at Engebi also and two or three badly injured goatfish were collected near the shore (Fig. 7). | Analysis by Species and by Feeding Habits. Among those fish which are fairly well represented in the samples, damsel fish appear to ingest the greatest amount of active matertal, followed by surgeon fish, butterfly fish, parrot fish, wrasse, species, squirrel fish, cardinal fish and groupers. gobies, Other of which we have only a few samples, and which indicate their ability to absorb active materials, puffers and eels (Table 11). are filefish, blennies, As the range of d/m/g indicates, there is great variation from species to species, island, and even from specimen to specimen, island to especially evident in the post shot fish. Omnivorous species almost invariably showed more activity than carnivorous species from the same area. - 48 _ Exceptions were ay ane vis An!