Geographic location
Antarctic
2
Burton
2
Custodio
2
Diaz
2
Galapagos
2
Gomez
2
Herdman
2
Indian
2
Mothes
2
New Zealand
Pacific
2
Percy
2
Queensland
2
Sladen
2
Valentine
2
Alvarez
1
Artigas
1
Barraza
1
Bismarck
1
Canada
1
Catalina
1
Duran
1
Emerson
1
Fernandez
1
Galindo
1
Genova
1
Gravier
1
Hooker
1
Kust
1
Lamarck
1
McCarthy
1
Mid-Atlantic Ridge
1
Osorno
1
Perez
1
Pulitzer
1
Reimer
1
Sutcliffe
1
Todd
1