between Big Wood and Gibson Cays, and several hundred yards east 

 of the center of Golding Cay. In all cases the commencement point 

 was established with Decca Mark X and the submersible then proceeded 

 due east along the bottom to a depth of 600 feet. 



Still photographs ashore were taken with a Press Type 4" x 5" still 

 picture camera; underwater stills were taken with a 35 mm "Calypso" 

 camera. Motion pictures were made underwater with a "Sampson" under- 

 water camera using artificial and natural light. 



GEOLOGIC SETTING 



Andros is the largest of the Bahamian islands. It is centered 

 at approximate latitude 24''29'N., and longitude yy'SZ'W., on the 

 Great Bahama Bank, and constitutes the western land boundary along 

 the majority of the Tongue of the Ocean (Figure 1). Barely more 

 than 30 miles wide, the island is approximately 90 miles long. A 

 network of tidal channels and marshes, calcareous mud, and mangrove 

 thickets characterize the geography of the west coast of the island. 

 Conversely, the east coast is well defined by alternating deposits 

 of sand and beachrock. A barrier-type reef extends along the eastern 

 coast of Andros and is separated from the island by a shallow lagoon 

 which does not exceed 3 fathoms in depth. 



A major part of the island is covered by low shrubs and trees 

 supported by a well-indurated, medium to fine-grained, oolitic 

 limestone. There is virtually no topsoil covering the limestone 

 country rock; instead, a few inches of humus collects here and there 

 in the cavities and depressions honeycombing its surface. 



The lagoon averages one mile wide and a maximum 2 to 3 fathoms 

 deep. The lagoon floor is an extension of the Andros country rock 

 and is covered by a varying thickness of medium- to coarse-grained 

 calcareous sand. In some areas (Fresh Creek, Salvador Point, Deep 

 Creek) the sand is as much as 5 feet thick, while in other areas 

 (Big Wood Cay; Golding Cay; High Point Cay) only a thin, shifting 

 veneer is present. 



