The five major ocean gyres

In oceanography, a gyre (/ˈaɪər/) is any large system of circulating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis effect; planetary vorticity, horizontal friction and vertical friction determine the circulatory patterns from the wind stress curl (torque).[1]

Gyre can refer to any type of vortex in an atmosphere or a sea,[2] even one that is man-made, but it is most commonly used in terrestrial oceanography to refer to the major ocean systems.

Major gyres

The following are the five most notable ocean gyres:[3]