Upwelling
The major upwellings in the ocean are associated with the divergence of currents that bring deeper, colder, nutrient rich waters to the surface. There are at least five types of upwelling: coastal upwelling, large-scale wind-driven upwelling in the ocean interior, upwelling associated with eddies, topographically-associated upwelling, and broad-diffusive upwelling in the ocean interior.
Modon (fluid dynamics)
Modons or dipole eddy pairs, are eddies that can carry water over distances of more than 1000 km in the ocean, in different directions than usual sea currents like Rossby waves, and much faster than other eddies.