- Alaska (AOOS)
- Caribbean (CariCOOS)
- Central and Northern California (CeNCOOS)
- Gulf of Mexico (GCOOS)
- Great Lakes (GLOS)
- Mid-Atlantic (MARACOOS)
- Pacific Northwest (NANOOS)
- Northeast Atlantic (NERACOOS)
- Pacific Islands (PacIOOS)
- Southern California (SCCOOS)
- Southeast Atlantic (SECOORA)