EASTERN AREA CRUISE 11 
April 20 - May 5, 19^7 
April 20: 
20-26: 
26: 
27 : 
28-29: 
30 : 
May 
ITINERARY 
Depart San Diego aboard R/V THOMAS WASHINGTON 
Pelagic vertebrate survey work between San Diego 
and Guadalupe Island 
Elephant Seal survey on beaches of Northeast Bay 
Guadalupe Island 
Seabird survey and banding on Islote Negro, off 
Guadalupe Island 
Pelagic vertebrate survey work between Guadalupe 
Island and Baja California 
Rendezvous with R/v ELLEN B. SCRIPPS in Melpomine Cove, 
Guadalupe Island; transfer personnel to SCRIPPS for 
Guadalupe Island work 
Elephant Seal survey on remaining beaches, east coast 
Guadalupe Island 
Fur Seal survey, Guadalupe Island 
Conclusion of Fur Seal survey, California Sea Lion 
survey on Islote Zapato 
Arrive San Diego 
INTRODUCTION 
This marine vertebrate cruise, Expedition MV 67*1 of Scripps Institu¬ 
tion of Oceanography, was led by Dr. Carl L. Hubbs. Smithsonian Institution 
is indebted to Dr. Hubbs for the opportunity to participate. Fourteen 
guest scientists, including Robert DeLong of POBSP, participated in the 
cruise. Their names and biological pursuits are listed in Appendix I. 
PELAGIC OBSERVATIONS 
The areas worked by the Washington were primarily deep (1000 fathoms 1) 
canyons. The surface layers of these areas are generally regarded as des¬ 
erts. Birds were not abundant. The northern birds which do occasionally 
inhabit this cold-water area apparently had returned to the northern breed¬ 
ing grounds. The southern hemisphere birds that are known from the general 
area had not yet arrived. Also, most of the local seabirds were nesting 
at this time. This, of course, limits their radius of movement. These.fac¬ 
tors as well as the environment contribute to the low density of birds in 
the area. 
The California Current pushes masses of cold water down into this area 
from the north. The activity of the Current is demonstrated by the presence 
of fresh, drifting Bladder Kelp ( Nereocystis and Macrocystis ) which occur 
only north of Point Conception. The kelp, blown loose by storms, was carried 
south by the California Current. 
