Hawaiian Monk Seal — Kenyon and Rice 
221 
TABLE 4 
Hawaiian Monk Seal Population in Spring, 1957 
ATOLL 
ADULTS AND 
SUBADULTS, 
WINTER, 1956 
SPRING, 1957 
DATE OF COUNT 
PUPS BORN, 
SPRING, 
1957 
DATE OF 
COUNT, 
1957 
TOTAL 
POPULATION, 
SPRING, 1957 
Kure Atoll 
105 
June 5, 1957 
23 
June 5 
128 
Midway Atoll 
67 
January 14, 1957 
4 
April 2 
71 
Pearl and Hermes Reef 
257 
December 17, 1956 
33 
April 15 
290 
Lisianski Island 
241 
April 15, 1957 
15 
May 14 
April 15 
256 
Laysan Island 
214 
April 15, 1957 
19 
January 7 
233 
French Frigate Shoals^ 
35 
July 20, 1957 
? 
April 15 
June 26^ 
July 20 
35 
Total 
919 
94 
1013 
1 Count by Paul Breese, Honolulu Zoo. A count of 30 sea’s was recorded in the scientists’ log, April 24— May 12, 1957, 
cruise No. 39, M/V "Hugh M. Smith,’’ POFI, U. S. Department of Interior, Fish and Wildlife Service. 
2 Partial count by David H. Woodside, Division of Fish and Game, Territory of Hawaii. 
eral small islets and sandspits. On the east 
side of the lagoon, the reef-rock is about 5 
feet above low tide level, exposing a 5 -mile 
strip up to 15 yards in width, see map (Fig. 1). 
Aerial counts were made on December 9 
(1415-1430), December 21 (1000-1130), Jan- 
uary 7 (1345-1400), January 24 (1330-1400), 
February 12 (1600-1800), and May 14 (1630- 
1645). Complete ground counts were made 
on December 20, January 14, March 5, 14, 
27, and May 2. 
Fig. 1 . Map of Midway Atoll. 
Pearl and Hermes Reef 
This atoll is roughly diamond shaped, 20 
by 12 miles. There are three sm>all islands 
(Kittery, Seal, and Grass) in the southwestern 
part of the lagoon. Seven to 12 fluctuating 
sandspits stretch eastward just inside the reef 
toward Southeast Island, the largest island in 
the atoll, which is about V 2 mile long. In the 
northeast corner of the lagoon is North Is- 
land, with several sandbars immediately to 
the south. All the larger islets, except Kittery, 
are covered with low herbaceous vegetation. 
We made flights over Pearl and Hermes on 
December 9 (1245-1325), December 17 
(1000-1100), January 7 (1300-1315), January 
24 (1515-1545), April 15 (1550-1625), and 
May 14 (1520-1610). 
Lisianski Island 
This island is a coral "pancake,” an atoll in 
which the lagoon has dried up entirely, leav- 
ing a depression in the interior of the island. 
The island is VA miles long by 5^ mile wide. 
Reef formations surround the island, extend- 
ing several miles to the southeast as Neva 
Shoal. We flew over Lisianski on January 7 
( 0930 - 0945 ) and April 15 (1250-1310). 
