
Table 27.--Number of marked 4-year males recovered on St. Paul 
Island in 1951, by date and body length of seal. 
(Tag-lost animals only; tag-lost animals are identified by 
a tag scar and by a hole which was punched in the hind 
flipper at time of tagging. ] 

Number of seals recovered during 5-day round with midpoint-- 
Field length June 
July 
—2 10 1 © 2 30Y Tota 


(inches) 2 2 30 
40 ee ee ee! SEF pi ees ae hy 
Al in| 5 Leeann Bee 
42 Se EN te thie 11 oS. Ty iS ee Fh Se 
43 ones 1 9 10 2 7 9 6 1 554/ 
LA —~— 2 5 19 18 #10 15 5 1 7 
A5 eee i 2 10 1 4 13 5 2. 4phl 
16 re | 2 7 1 4 5 2 3. 254 
47 a, pe 1 4 he “ie ES es 
48 — .. Fe tn owe te oe Ges, 
49 oe -——— 1 aw oe La 
50 wee ee Es Sum) Masa pl ee A, 
Total -—~ 5 20 68 51 29 50 22 9 254 
1/ 20 and 22 June only; no search made for tag-lost seals. 
2/ No kill on 23 June. 
3/  =—.28 and 29 July only. 
4/ Total recorded, 41 through 47 inches, 230 
‘Proportion escaping = (1 - 0.57)(0.300) = 0.13 
It is estimated that 87 percent of the 4-year-olds hauling out 
on land during the killing season are taken in the kill. 
It should further be pointed out that the escapement may be 
higher in other years, since in 1951 clubbers were instructed to take Al- 
to 46-inch length seals whereas normally only 41- to 45-inch seals are 
taken. While it is true that in any year many 46-inch seals are taken 
and certainly in 1951 not all 46-inch seals were taken, it is rrobable 
that some reduction in 4-year-old escapement could be attributed to this 
factor. 
_-64- 
