RFGLiytD 



1988 JAN 2 /.;•! li : 2 1 



ONR, BOSTON 



FILE 



ABSTRACT 



A visual and photographic survey of the shore and ocean bottom 

 to 600 feet (100 fathoms) depth was performed off selected sites 

 on the east coast of Andros Island, Bahamas. Climatology and 

 oceanographic conditions are also presented. Survey methods 

 employed both SCUBA divers and a manned submersible (Perry 

 Cubmarine PC3-B) to provide direct visual observation and 

 measurement of bottom features. 



The Andros shoreline was observed to vary considerably in mor- 

 phology and composition: barrierreef development ranges from 

 well-developed to virtually non-existent from north to south along 

 Andros Island. A marginal escarpment commencing offshore 

 between 14 and 16 fathoms was observed to descend almost 

 vertically to 100 fathoms. Various morphologic features of the 

 escarpment suggest a lowering of sea level and subsequent sub- 

 aerial and intertidal erosive processes which have been active 

 in the recent geologic past. 



