. 10 15 RECORDER SECTIONS Fig. 4. Variations in the numbers of the predominant plankton organisms on Record 3, taken over a distance of 50-6 miles. Note the changes in the plankton community about recorder sections 13-15. the gastropod lanthina, and the copepod Candacia ethiopica all came to an end together and Calanus robustior appeared on the roll. Their distribution, together with that of other Copepoda and young Euphausiacea, is shown in Fig. 4. Diphyidae, Polychaeta,

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