FISHERY BULLETIN: VOL. 87. NO. 4, 1989 



Figure 1. — Chart of the central Oregon coast showing Heceta Bank (depth in meters), and 

 insert showing area covered by chart. 



on the bottom at an altitude of 2 m) were identi- 

 fied when possible, counted, and lengths esti- 

 mated to the nearest 10 cm. These data were 

 simultaneously recorded on tape recorders 

 and/or an event recorder by one of the two scien- 

 tists on each dive. Altitude above the bottom 

 was determined by observing a length of chain 

 marked in decimeters suspended below the sub- 



mersible and visible from the port. Altitude was 

 fairly constant, about 2 m, on dives over uniform 

 bottom. A fiberglass "T"-shaped rod, protruding 

 2.5 m from the bow of the submersible with 

 black and white bands at 10 cm intervals, and a 

 similar 50 cm bar with 10 cm bands attached to 

 the bottom of the chain were used to estimate 

 fish lengths. 



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