The iacid©ace of sharks all orer this area is fery higho 

 Sixth trial 



fhe positdon ©f the fishing grevmd ms 5® IS'Sp 131° 18»Es ©ff 

 to th© west of Kei lo On July 15 at 0540 100 baskets of gear wer© 

 set in an ESE direstioa for a total length of 8o5 miles o Eauliag 

 in th€i lines was b©g\m at 122S mid eompleted at 1850o Daring th© 

 hauling=-ln 7 baskets of line sankj, biat th© line did not break and w© 

 were able to recover this gearo The csat^sh wag 78 yellowfins 2 big= 

 eyed J, and 6 sharks, with 16 fish sh&rk^bitten and nine branch lines 

 broken off o 



The catch rate was 13 o3 net couating the shark=-bitt®n fish^ ©r 

 i6oO if these are includedo Measuring the yellcwfin showed that the 

 smallest was just under 1 meter and raost of them were 110 ■= 120 

 em in lengtho An examination of the stoasach eontents mad® wh®n. gutting 

 th© fish showed that they had been eating saostly sqiiido 



S®Ten-'5h frial 



■fh© position of this fishisig grotmd was 5° Ib^B^ 131° 15°E- off 

 Kei lo On July 16 at 0510 100 baskets war® sat in sua ESE direetiono 

 In order to prsveiat the weight of th® hooksd fish from sinking th© 

 gear w@ began from this day on to attach two glass floats and two 

 paulownia wood floats to eaeh of th© float lines o While patrolling 

 th® lines we boated 7 yellowfino 



Th® tc't©l catsh was 47 yellowfirip 3 big^eysdj, 2 white marl in, 

 and is addition 8 shark^bitten fish and 4 brok^an branch lines o The 

 cat«3h rats was 8o7 if th© shark^bittan fish are ©seepteds or lOoO if 

 they are in<tludedo 



?h9 position of the fishing grsuad was 4° 41'*S, ISO® Sl^Ej, east 

 of Banda lo On July 17 at 0400 120 baskets were s®t in a 3£xE 

 direetiono Although the water color was good on the fishing groumdj, 

 it appeared somewhat turbid o IShile patrolling the line w® hauled in 

 2 yellowfin and 3 big=.©yede The total catch was 42 yellowfin^, 11 

 big^eyed, and 9 sharks ^ in addition to which there were 21 shark= 

 bitten fisbf. and 1? broken lines o Th® eate.h rat« was 7o4 without the 

 shark=bitten fishp or 10o3 if these are includedo The yellowfia in the 

 catch were all large fish o-xer 130 cm in lengtho 



Mjji.tfa Trial 



The position of this fishing ground was 4® 21'S^ 130® 22 »E, 

 east of Baada lo On July 18 at 0520 130 baskets of ^©ar were aet in 

 a SExE direction. On the fishing ground th© water temperature at the 

 100=meter level was 190 and the water color was good^, although', 

 appearing somewhat turbid,, with a transparency of 2§oSo 



While patrolling the lines we hauled in 12 yellowfin and 1 



=12= 



