oe ne ae reyatin SAA NS EOE 8 RE sate we BT ae, Sate man | the samples of water taken in this area was reported in terms of gamma activity making valid comparisons with Table 2 difficult. Table 2 compares the compositions of the radioactivity retained by two species of marine organisnis that wore selec.ed from the golid fraction mentioned in Table 2. Even from the meager data shown here, it can be seen that there are significant variations in the amounts and kindsof activity retained. State and Size of Fission Particles in Sea Water. Table 3 is taken from earlier laboratory experiments at NRDL by Greendale and Ballou (Reference 3) wherefission products were vaporized in sea water. TABLE 1 The four nuclides listed display some tendency tu BETA ACTIVITIES OF ORGANISMS PROM CASTLE* § + Setal feeders, R - Rapacious feeders, T - Tentacular feeders, Parena - Estirasted values. Sample F feeding Organism No. Total Activity x Activity P o/min Y-8 Collected 1500 9 May 1954 § Welaht mg 19 9,119 920 34.9 2 4,465 a4 s 10 6,243 614 R R Rapacious copepods adult Rapacious copepods 10 10 5,259 2,958 10 10 R Notivity c, win/gm Wet Weight Rerbdtvorous copepods (Calanus) adult Herbivorous mixed Calanoid copepods Stylocheiron (Euphaualid) 3 wert Organism Activitys o/min/gm Dry Weight mg 18 3.7 x 104 (13.0) 45 0.60 0.99 17.9 al 34 2.9 528 297 15.9 3.8 12 15 33 3.3 44 2.6 6,127 $13 16.8 3 3.6 3,248 2.0 325 9.8 1.3 3.3 2.8 1 248 245 3.2 0.2 0.77 1.2 369 1,258 2,272 5.3 4.0 6.3 0.2 12 ta 4.6 3.2 3.6 4 rw. 2.2 _ (3.0) 0.723 0.B0 1.0 22 140 (3-5) ay 0.22 LA 0.63 1.6 1.0 1.0 6.1 x 19 R Sagitta 12-18 mm Sagitta 10 - 12 mm T Siphonophore piece T 1 t Lucifer 7 mm Fish Larva Polychaeie fragment 4 1 ~ 1,474 1,258 2,272 t Pieces of algal detritus —_ 722 Y~-6 Collected $s s Copepods, Pleuromsmma Ostracoda, small 10 & 219 1,322 2400 8 Copepeda. Pleuromamma 10 3,635 363 (61) 37 6.0 0.93 1954 $3 Euphausiids, 3.9 mm 2 2,053 1,027 (20) 2.05 1.0 1.0 R Copepoda, rapacious 10 328 33 @) 0.33 11 1.0 R Sagitta 5 - 15 mm 10 450 837 45 54 (2.3) (8) 6.45 0.54 2.0 0.80 1.9 @) 0.2 1.2 12 (2 5) 0.22 6.90 1.0 {5.9) 0.32 0.68 La 4.8 0.95 1.0 7 May . Gyllid) 25 mm adult R Conspoda. vapacious a 1 Phronima 7 mm and 10 2 235 118 R lLamphipod 2 mm Copepods, Corycaeus 25 22% 8 T Siphonophore pieces _ 340 ~ t Floccwlent detritus ~— 4,757 _ (50) le “Counts reduced to time of counting, 22 May 1954. t Feeding type enknown. ¢ Efficiency of the Beta Counter was about 14 percent. segregate between three states of dispersal; however, it must not be inferred from these laboratory data alone that in the case of fallout into the sea and in the presence of living organisms these elements would be permanently pirtitioned in the manner taoulated. Moreover, a living organisin might possess an affinity for activity in quite a ditfereit kind and degree than would the same organism dead. Table 3 does not indicate the physical state of barium, but from its chemics! and 14