SECTION 12 



397 



REVIEW OF CERTAIN MAJOR FISHERIES 



In this Section , there are complete data on the commercial landings of certain major species of 

 fish and shellfish taken in the U.S. fisheries. Additional information is presented on the operating 

 units for many of these fisheries. Most of the major species are taken by several types of fishing 

 gear operated in two or more States; because of this, the casual reader of the digest may have dif- 

 ficulty in locating complete data. The information contained in this Section includes operating units 

 and the volume and value of the catch by types of gear, by States, or by districts. 



PRINCIPAL UNITED STATES FISHERIES 



