52 
BULLETIN OF THE BUREAU OF FISHERIES 
streams. It is very apparent, therefore, that the fish found about the Shumagin 
Islands are very largely Bristol Bay residents. 
With one exception no very striking differences are to be observed in the per- 
centage of the returns from different experiments taken in any given locality. 
This exception is the case of returns from Morzhovoi Bay. Relatively large per- 
centages of the fish tagged on June 7 and June 23 were taken in Morzhovoi Bay — 4.7 
per cent and 13 per cent, respectively. After this last date apparently fewer fish 
visited Morzhovoi Bay on their migration to Bristol Bay. A similar difference is 
not noticeable in the case of Ikatan Bay, which is practically at the entrance to 
False Pass. It seems reasonable to conclude, therefore, that during the latter part 
of the season the fish go more directly from the region of the Shumagin Islands to 
Isanotski Strait and through this to Bristol Bay. Additional evidence of this will 
be presented in the section dealing with the rate of travel. 
COAL HARBOR TRAP, UNGA ISLAND 
On account of the position of the Coal Harbor trap in Unga Strait, on the 
north shore of Unga Island, it has been of interest to compare the results of tagging 
at this point with those obtained from the tagging at the Kelly Rock and Big 
Valley traps, which are located on the eastern shore of Unga Island near the extreme 
southern part of Popof Strait. Only two experiments were undertaken at the Coal 
Harbor trap, mainly because of the fact that this trap, which was new, did not prove 
successful and took but a few salmon at any time during the season. The results 
of these two experiments are given in Table 31. 
Table 31 . — Returns of red salmon from each tagging at Goal Harbor trap, Unga Island. Percentage 
taken in each locality and median time en route in days 
[Number of fish tagged, 247] 
Locality of recapture 
Approxi- 
mate 
distance 
June 27—137 tagged, 
53 returned 
July 4 — 110 tagged, 
43 returned 
Total 
number 
returned 
Percent- 
Average 
time, 
in days 1 
(stand- 
ard 
miles) 
Per cent 
Time 
in days 
Per cent 
Time 
in days 
age 
returned 
5. 1 
12 
12.7 
4 
21 
8.50 
6.7 
105 
.7 
7 
.9 
13 
2 
.81 
10.5 
120 
1.5 
10 
.9 
3 
3 
1.21 
8 
120 
17.5 
6 
6.4 
9 
31 
12.55 
6.9 
255 
.9 
12 
1 
.40 
12 
Bear River 
295 
.7 
14 
.9 
17 
2 
.81 
15.5 
430 
.7 
20 
1 
.40 
480 
2.2 
26 
7.3 
17 
11 
4.45 
480 
4.4 
20 
8.2 
16 
15 
6.07 
650 
.7 
1 
.40 
465 
2.9 
21 
.9 
16 
5 
2.02 
415 
.7 
13 
1 
.40 
13 
40 
.7 
4 
1 
.40 
4 
480 
.7 
16 
1 
.40 
16 
38.7 
39.1 
96 
38.86 
1 See footnote 3 in Table 30. 
A comparison with Table 30 shows that there was practically no difference in 
the returns obtained from these experiments and those begun at Kelly Rock and 
Big Valley. A somewhat larger percentage of the fish liberated from the Coal 
Harbor trap was taken in the vicinity of Unga Island — mainly in the other two traps 
