-27- organisms, however, contained high amounts, and the radioactivity of the whole shrimp samples was approximately two to ten times as high as that of the whole fish. Fish also were collected with three of the plankton samples, and two dolphins (Coryphaena hippurus) were caught by hook and line. The gross beta activity of these fish, of a squid, and of a portion of an alga (Turbinaria ornata*) collected during this period are given in Table 6. Results of the radiochemical separations and gamma spectrum analyses of some samples in Table 6, as well as others, are given in Table 7. Table 6. Gross beta radioactivity of the miscellaneous samples. Values expressed as d/m/g of dry weight at time of collection. Sample No. Pp-7 Organism Lantern fish (whole) P-17 Jack F-1 Dolphin P-35 Blenny d/m/g x 103 4,940 " 82.9 " 69.0 muscle 12.0 liver F-2 7,1 Squid muscle stomach A-1 Alga(Turbinaria ornata) 62.6 156 5, 840 *This alga is not pelagic and normally grows on the reef, al