Six lines were trolled from the Paragon 

 while enroute to the survey area and eight within 

 the area. The troll catch was 233 albacore. 

 Of these, 212 were taken in the gill -net fishing 

 area, representing a catch rate of 1.1 fish per 

 hour trolled. The trolling results and lengths 

 of troll -caught albacore are given in table 6. 



The total albacore catch landed at 

 Seattle, Washington, from the Parago n was 

 27, 053 pounds. Of this, the marketable fish 

 amounted to 24,000 pounds. 



Taggin g. --Three albacore were tagged 

 on the Smith with Honolulu Biological Laboratory 

 dart tags (Yamashlta and Waldron 1958) ( table 

 5). 



Food studies. --Albacore stomachs from 

 2 days' catch of the Smith 's gill nets and from 

 all the albacore from the longline and troll 

 catches, except for the three which were tagged, 

 were preserved for laboratory analysis. 



Forage organism s. --Observations of 

 the abundance of forage organisms, using a 

 300-watt light subnnerged to a depth of 1 meter, 

 were made on the Smith. At least one estimate 

 was made of the relative numiber and size of 

 the saury and squid under the ship's cargo 

 lights while drifting at each oceanographic and 

 gill -net station. A summary of the data is 

 given in table 10. 



Three 20 -minute tows were made in 

 the survey area fromithe Smith using the Isaacs- 

 Kidd midwater trawl (King et al. 1957). The 

 positions are given in table 1. They were made at 

 night with the trawl submerged to approximately 

 the middle of the mixed layer. The catches 

 were negligible, consisting only of a few 

 euphausiids, calanoid copepods, andmyctophids. 



Although no formal record was kept, 

 night light observations were made from the 

 Paragon with a 100-watt light placed 1 foot out- 

 board and 10 feet above the water. During the 

 gill -net sets the light was turned on for a 30-60 

 minute period after it had become connpletely 

 dark . The general absence of organisms under 

 the light was striking with one exception; at 

 station 18 (table 4) a large (1, 000-fish) school 

 of saury, Cololabis sp. , was observed. The 

 results of daylight observations were similar 

 in that only a few small organisms such as 

 saury, Vellela sp., and pelagic barnacles were 

 sighted. 



Observations of bird flocks, fi sh 

 schools, and aquatic nnam mals . --The wheel- 

 watch of the Smith made observations of fish 

 schools, birds, and aquatic mammals (table 11). 

 Only one albacore school was sighted during 

 the cruise. It was sighted at 45°08'N., 174° 

 47'W. while the vessel was patrolling a longline 

 set, but no albacore were tciken on either the 

 trolling lines or the longline. 



Plankt on volumes . — Twenty -nine 

 0-14-m. oblique, two 0-60-m. oblique, and 

 25 surface plankton tows were made with a 

 1-meter net of 656 Nitex netting (aperture 

 openings 0.65 mm.) described by King and 

 Demond (1953). An additional seven surface 

 hauls were made with a 45 -cm. net of sinnilar 

 construction with 303 Nitex netting (aperture 

 opening 0.30 mm.). Five of these seven tows 

 were made across atemperature front centered 

 at 41°30'N. , 175°07'W. The positions and types 

 of tows are listed in table 1 and the plankton 

 volumes are given in table 12. 



Measurements of the rate of photo- 

 synthetic carbon fixation by use of the radio- 

 active carbon method developed by Steemann 

 Nielsen (1952) and modified by Doty (King et al. 

 1957), were made aboard the Smith by a staff 

 member of the University of Hawaii. Surface 

 and 20-meter samples were collected at 0800 

 and 2000 daily throughout the cruise, except 

 for the September 4-9 period, when the 20-meter 

 sample was omitted to avoid loss of time. 

 Three 24-hour series were also run, one just 

 north of the Hawaiian Islands, one at the extreme 

 northern latitude reached on the cruise, and 

 one at the southern extremity of the 175° W. 

 longitude transect. At five of the longline sta- 

 tions, 6-hour in situ experiments were run with 

 bottles at 100-percent, 75-percent, 25-percent, 

 10-percent, 5-percent, and 1-percent levels of 

 the surface illumination. Samples for chloro- 

 phyll analysis were taken along with the 0800 

 and 2000 samples and the in situ samples. A 

 brief summary of the methods of processing 

 the samples and the results has been provided 

 by M. Oguri of the University of Hawaii and is 

 included as Appendix "A". 



Oc eanograph ic Studies 



Water sampling. _ -A total of 51 oceano- 

 graphic casts (including two at the IGY station 

 off Oahu) were made from the Smith (table 1) . 

 Outside the primary albacore survey area, 

 oceanographic observations were limited to the 

 collection of data which would be sufficient to 

 permit comparison of conditions with those ob- 

 served during previous years. Also, the 



