PLATE 30 

 Figs. A-C. — Station 46, upper rise, north of submarine valley, 1290-1300 fms. 

 Figs. D-F. — Station 47, upper rise, south of submarine valley, 1340 fms. 



A-C, Mud, largely clay, bottom with small depressions and burrows. Note large 

 darker ovate patches. Bladder-like object in A (arrow 1) is probably an Elasi- 

 podid holothurian. Unidentified sea-star or crinoid (arrow 2) in A. Linear trail 

 in B. Ophiuroid brittle stars near base of C; also small worm tubes or small 

 holothurians (circled) projecting from bottom. 

 D-F, Silty mud bottom, slightly undulatory, covered by tracks, trails and burrows. 

 Small worm tubes or small holothurians projecting from the bottom (circled in 

 E and F) trend toward the east, suggesting current moving in that direction. 

 Regular sea urchins in all three photographs. 



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