Figure 9. Underwater photographs of some typical seo floor environments taken with the NEl Type III 

 Deep-Sea Camera. Each photograph covers approximately 21 square feet of the bottom at a water distance 

 of 6 ft. Tri-X film with a speed of 200 was used with an f2.8, 3-cm wide-angle lens stopped down to f8. 

 Strobe flash of 1/1500-second light duration provided the illumination. 



Figure 9A. Brachiopod shells and rounded beach cobbles on a sandy bottom near San Clemente Island, 

 Calif, lot. 32°-55'30"N, long. 1 18''-34' 35"W. Depth, 396 ft. Note variety of rock fish in upper half of 

 photograph. 



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