192 CASA 2019-2 There could be a stray atam or two of cesium and strontium in the sea; we can't get excited at all about it, since it's not in the food chain. So, when we have this great nuclear war, I'm going to run out and catch myself a fish and eat it and feel quite sure that my food supply isn't in jeopardy, . In terrestrial areas there's very little chance for revegetation or regrowth if the soil is burned away and the seeds destroyed (Figure 36), The entire fauna and flora, one would assume, inthis place could not be re-established. Figure 37 is a photograph of an area where the soil has not been burned nor removed. You see a soil core where most of the organic material was in the upper inch. On the right is a radioautograph showing the concentration of the radionuclides in this material, There is a different accumulation of radionuclides depending on the zone of feeding of the plants, aa in the zone of feeding of the animals, Plauts with shallow teeding roots (Figure 38) have a better chance to pick up the soluble forms and incorporate them in their tissues than do those plarcs that root deeper, like the coconut, for examnple, They feed deeper inthe substratum and do nat accumulate the radionuclides available to them in the soluble form, The distribution in the sea (Figure 39) presents a constantly shifting pattern that changes with the seasons, with time, and, of course, with the currents, It changes from hour to hour or at least from day to day. The radionuclides in .be sea are incorporated in the lower strata first, since they are taken up by the small biota and then by other, - larger organisms up the food chain. Many of these organisms are in the deeper layers during the day and migrate to the surface at night. Thus, there is a vertical diurial migration as well ag a constant shift, depending on the direction of the prevailing currents. AYRES: Is that deep water? DONALDSON: AYRES: It's surface water. Diurnal irrigation doesn't normally extend into shallow water, does it?