key: (NUMBER OF TRAWLERS 

 PER 5 MILE SQUARE) 



jAM.ta-t9,Me cnuaeT 



• = 1-7 



■ =8-14, • =15-21. ■■22-28. % =29-35. 

 BOUNDARY OF OBSERVATION 



= OVER 35. 



Figure n.— Distribution of fishing effort on the Tortugas grounds (November 1957-February 







_______ 



■■_!_.1.J1".^ 



•Mr ifte.iMi OMIMC is june 9-ii, igse 



key: (NUMBER OF TRAWLERS 

 PER 5 MILE SQUARE) 



. = 1-7 ■ =8-14. • =15-21. ■=22-28. # =29-35, ■ =OVER 35. 

 BOUNDARY OF OBSERVATION 



Figure 18.--Dl«ribution of fishing effort on the Tortugas grounds (March-July 1958). 



20 



