No Pacific Ocean
Mexico
Revillagigedo Islands
Socorro Island: Grayson Cove on W shore
26Aug1946
early p.m.
18°44.4'N - 110°59.6'W
18.740, -110.993
-
to 5 fm
to 5 fm
Zaca Exp.
Hancock 1542-46
MV Zaca
observation
CL Hubbs & party, SIO
-
-
boulders & reef
little
little
low