Surface currents: Reach depths of about 100 meters (about 300 feet)., Can stretch across oceans, The Gulf Stream is one of the strongest surface currents on Earth, Affected by continental deflections, Affected by Coriolis effect, Affected by global winds, The sun causes winds to form, and winds cause these currents to form., Deep currents: Movements of ocean water far below the surface, Caused by differences in water density, Warm water is less dense, so it rises above the cold water, The colder water moves from the surface to the deep ocean, forming these currents, Flow along the ocean floor, Deepest and densest water in the ocean is near Antarctica., High salinity = high density,

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