Sampling locations and Ocean currents. Sampling locations and major tropical Atlantic Ocean currents. Locations are: 1. St. Croix, USVI; 2. San Blas, Panama; 3. Grenada; 4. Paraiba; 5. Cabo Frio; 6. St. Paul's Rocks; 7. Ascension; 8. St. Helena; 9. Cape Verde; 10. Sao Tome. Current abbreviations are: GS, Gulf Stream; CarC, Caribbean Current; NEC, North Equatorial Current; NBC, North Brazil Current; CC, Canary Current; SEC, South Equatorial Current; ECC, Equatorial Counter Current; BrC, Brazil Current.