Oceanography 1951 



Fish and Wildlife Service. 



( Left ) Record of sonic depth sounder 

 showing echoes from schools of men- 

 haden at depths of 60 to 80 feet. 



( Below ) Record of the depth of the 

 sea showing roughness of the bottom 

 over a course of 100 miles southeast 

 from Bermuda. The large peak is due 

 to a seamount rising six thousand 

 feet from a depth of three miles. 



S*^NAi. "O CiH-ft^ 



?/ ^ 





Woods Hole Oceanographic Institution. 



Woods Huh (),-,, tno,irap}iic hi^t ihttitm. 



One thousand fathoms down — brittle stars and a sea spider photographed on the bottom. 



