JR-32-78 
JR-33-78 
(1-3) 
substation 
ir 
H 
JR-34-7 8 
- 8 - 
Littorina planaxis , First seen here, on damp, 
boulders at top of tide line in spray zone; 
tide falling, low at 2:30 P.M. 
salinity 36 % c 
36.48 N; 121.47 W 
June 19, 1978 - 4:00 P.M, 
Pacific Ocean 
Asilomar State Beach 
West at Pacific Grove 
Monterey County 
California 
Littorina scutulata from mid to upper tide level; 
Littorina planaxis in upper tide level to Spray zone 
above high tide line—on granitic multitexured rock—animals 
showing color and marking variations adaptive to substrate 
ca. 36.38 N; 121.56 W 
June 20, 1978 - 1:00 P.M. 
Pacific Ocean 
on rock jetty just south of Morro Rock 
Morro Bay 
San Luis Obispo County 
California 
1: - from beach side of jetty, mid and high tidal levels 
2: - from top and outside of jetty in ocean spray zone 
3: - from low tide line on rocks where very young, probably 
recently meta morphosed Littorina (2 species) living, 
about low tide - 35.22 N; 120.51 W 
June 20, 1978 - 4:00-5:00 P.M. 
Pacific Ocean 
Shell Beach, south part of town 
San Luis Obispo County 
California 
Littorina scutulata and L. planaxis on rocks rising tide - 
35.09 N; 120.40 W 
