Sea Cucumbers at Rongelap Atoll— Bonham and Helb 
307 
TABLE 1 
Distribution of H . atra and H . leucospilota on the Seaward Shores of Islets 
by 100-m Section Numbers 
(The body of the table shows section numbers in which the abundance of sea cucumbers fell within the range 
indicated in the column heading. Sections for each islet were numbered clockwise starting at the counterclock- 
wise extremity (left-hand end when facing seaward) of the seaward shore.) 
Islet 
Dat 
e 
100-m 
section number 
Remarks 
1 
Total individu- 
als observed 
or estimated 
No 
Name 
it) 
Q« 
<D 
KQ 
& 
u 
u 
X 
VD 
CL 
0) 
W 
Nun 
0-2 
(U* 
nbers 0 
3-10 
5.62) 
f H. at 
11-100 
(33.2) 
-a 
101- 
1000 
(318) 
1001- 
3000 
(1730) 
Numbe 
0-2 
(U* 
i 
rs of : 
3-10 
(5.62) 
1 
H. leuc 
11-100 
(33.2) 
1 
ospili 
10J,- 
1000 
(318] 
Dta 
1001- 
3000 
(1730! 
R. atra 
U- imissLz 
SPilota 
2 
Naen 
15, 
19 
1-5 
1-5 
0 
0 
22 
3 
W. Yugui 
15 
0 
0 
4 
Pigani- 
yaroyaoro 
15 
19 
1-4 
5 
6 
1-4 
5 
6 
E. shore, many 
210 
2000 
5 
Aerik 
22 
1-3 
1-2 
3 
12 atra on W. shore 12 
40 
6 
E. Yugui 
22 
1-4 
2-4 
1 
8 atra on E, 16 on 
W. 24 
64 
shore 
8 
Lomuilal 
14 
1-5 
1-5 
0 
0 
9 
Geien 
14 
1-4 
1-4 
32 
20 
13 
13 Inner 
12 
(10,000 atra in lagoon. 
I. 13 6 
i I. 15) 
10000 
0 
13 
13 Outer 
12 
17 
1 
2 
2 
60 
240 
18- 
Reef area 
i 
13 
(700 meters north of Aniiru I. had 83,000 atra, 2600 leuco.and 4300 Stichopus 
83000 
2600 
chloronotus) 
18 
Aniiru 
12 
12 
1-2 
1-2 
200 
60 j 
19 
Kabelle 
10- 
14 
12 
2 
7 
3,8,9 
0,1,4, 
(10) 
2-10 
0, 1 
1 
200 atra & 100 
3000 
150 
13 
6 
leuco. in N.E. 
1 
1 
channel 
j 
20 
Namoen 
12 
2 
1 
2 
1 
4 leuco. S. side 
2 300 
15 | 
29 
Mellu 
17 
18 
2-5 
1, 15 
6-9,13, 
10-12 , 
1-23 
3 atra, 3 leuco., E 
3500 
13 
14,16- 
19,20, 
channel 
18,21 
22,23 
31 
Gog an 
18 
1-8 
3-6 
1-2, 
8 atra, E. channel. 
330 
32 
7-8 
Slab rock at 1-3 & ! 
34 
Kieshi- 
18 
1-6 
1-6 
600 
0 
echi 
39 
Eniaetok 
8 
9 
2-3, 
1.12, 
4,9 
11, 14 
10 
1-9, 
10,14 
0 
5 atra & 1 leuco. 
3600 
24 
5-8 
13,15- 
11-13 
N. side 
23 
15-23 
53 
Rongelap 
5 
8- 
1-2, 
3-5, 
6, 7,15, 
28-30, 
1-24, 
25,41 
46-48, 
some atra, lagoon 
3400 
990 
11, 
8-14, 
36, 42, 
22,27, 
39-41, 
26-40, 
44,45 
50-52, 
side 
20/ 
16-21, 
45,55, 
37,43, 
44,46 , 
42-43, 
49,56 
54,55, 
21 
31-35, 
57,61, 
47-52, 
80 
53,67- 
63,66 
57-62, 
37,53, 
66,71 
54,58- 
71,83, 
72,74 
64,65, 
67-69, 
60,62- 
84,88- 
76 
73,75, 
83-92 
65,70, 
92 
77-79, 
72-79, 
80-82, 
81,82 
85-87 
54 
Arbar 
19 
1, 2,' 
3-5, 
1-26 
27-29 
73 
38 
6-12, 
13-26 
27-29 
58 
Tufa 
20 
19 
19 
200 atra , lagoon , 
20 
0 
mid-islet only, seen 
60 
Burok 
20 
1-12 
1-12 
1 atra, lagoon sidel 
| 60 
40 
61 
Pokoreppu 
20 
1 
1 
‘ " 1 
0 
0 
Total sections 
76 
65 
66 
23 
3 
160 
41 
36 
1 
1 
(Total 110421 
6327) 
‘Arithmetic mean. Means in other columns are geometric. 
