Using Ocean Data you can view the Ocean currents from two models - Hycom and Mercator as well as TideTech's Tidal Global Model .
The Hycom Ocean Current data comes from the US Navy, and gets distributed by Florida University. The data update times can be unreliable because of this data flow, but is our recommended ocean current model. This model is driven by GFS atmospheric model.
The Mercator model is from the Europeans and driven by ECMWF atmospheric model.
The Tidal current model used is the MyOcean IBI 2.5 km resolution for areas around Europe, and for tidal current GRIBs around USA the data is sourced from NOAA.