Olfaction and Sharks — Tester 
163 
TABLE 7 
Response of Normal Blacktip Sharks (nb), Blinded Blacktip Sharks (bb), and Normal Grey 
Sharks (ng) to Human Blood at Eniwetok Laboratory, I960 
DATE 
(1960) 
TIME 
TANK 
SHARKS 
BLOOD 
(ML) 
DONOR, DATE 
ACTIVITY INDEX 
RESPONSE * 
Controls 
Test 
7/12 
0954 
I (F-I) 
2BB 
3.0 
JK 7/8 
26.0 
9.0 
R 
1040 
II (A-C) 
2NG 
3.0 
JK 7/8 
13.0 
20.2 
A 
1108 
I (A-D) 
2NB 
3.0 
JK 7/8 
57.8 
39.0 
R 
1445 
I (F-I) 
2BB 
6.0 
JK 7/8 
21.6 
6.6 
R 
1515 
II (A-C) 
2NG 
6.0 
JK 7/8 
19-8 
24.6 
A 
1540 
I (A-D) 
2NB 
6.0 
JK 7/8 
15.6 
13.2 
R? 
7/18 
1529 
I (F-I) 
2BB 
3.0 
JK 7/8 
21.6 
24.6 
O? 
1552 
I (A-D) 
2NB 
3.0 
JK 7/8 
37.2 
17.8 
RR 
1645 
II (A-C) 
2NG 
3.0 
JK 7/8 
11.0 
10.0 
O? 
7/21 
1015 
I (F-I) 
4BB 
3.0 
ALT 7/20 
22.8 
35.6 
AA 
1045 
I ( A-D ) | 
4NB 
3.0 
ALT 7/20 
27.7 
26.4 
O? 
1135 
II (A-C) i 
4NG 
3.0 
ALT 7/20 
37.4 
49.8 
A 
1350 
I (F-I) 
4BB 
3.0 
ALT 7/20 
30.4 
39.2 
AA 
1415 
I (A-D) 
4NB 
3.0 
ALT 7/20 
21.8 
28.0 
A 
1450 
II (A-C) 
4NG 
3.0 
ALT 7/20 
33.7 
44.2 
A 
7/22 
1015 
I (F-I) 
4BB 
0.3 
ALT 7/20 
26.4 
41.6 
AA 
1045 
I (A-D) | 
4NB 
0.3 
ALT 7/20 
31.6 
40.0 
AA 
1135 
II (A-C) 
4NG 
0.3 
ALT 7/20 
24.6 
35.2 
A 
1405 
I (F-I) 
4BB 
0.03 
ALT 7/20 
30.6 
35.0 
A 
7/26 
0910 
I (F-I) 
4BB 
3.0 
ALT 7/20 
22.8 
25.0 
O? 
1000 
I (A-D) 
4NB 
3.0 
ALT 7/20 
51.0 
46.4 
O? 
1135 
II (A-C) j 
4NG 
3.0 
ALT 7/20 
28.9 
40.8 
A 
2035 
I (F-I) j 
4BB 
3.0 
ALT 7/20 
34.6 
36.8 
O 
2150 
II (A-C) 
4NG 
3.0 
ALT 7/20 
31.0 
36.8 
A 
7/27 
0925 
I (F-I) 
4BB 
0.3 
SK 7/26 
23.6 
27.6 
O 
1.0 
SK 7/26 
— 
22.6 
O 
3.0 
SK 7/26 
— 
31.8 
A 
1045 
I (A-D) 
4NB 
0.3 
SK 7/26 
45.6 
46.2 
O 
1.0 
SK 7/26 
— 
56.0 
A 
3.0 
SK 7/26 
— 
57.2 
AA 
1500 
II (A-C) 
4NG 
1.0 
SK 7/27 
46.8 
53.2 
O 
3.0 
SK 7/27 
— 
52.2 
A 
* RR, strong repulsion; R, weak repulsion; O, no apparent response except sensing; A, weak attraction; AA, strong 
attraction. 
became excited and engaged in the typical hunt- 
ing response. It is assumed that they were stim- 
ulated by odors emanating from the fish. In 
view of the delayed response, it seems unlikely 
that the blinded sharks were attracted by vibra- 
tions or sounds that may have been made by the 
fish although this possibility could not be ruled 
out in these rather crude experiments. 
In another series of experiments at Eniwetok 
in 1959, an uninjured fish was held in a bucket 
of saltwater for 15 to 20 min prior to an ex- 
periment. The bucket was slapped or agitated 
Fig. 9. Diagram of apparatus used at Eniwetok Ma- 
rine Biological Laboratory for investigating response 
of sharks to living fish. 
