Figure 9D. Typical red clay bottom at the base of the Continental Slope off the coast of Southern 

 California. Lot. ST-ICN. Long. 121 "-Z'W. Depth, 12,780 ft. No biological life is visible in the photograph. 

 The pitted sea-floor surface indicates extensive churning of the sediments by burrowing organisms such 

 as worms. 



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