Surface currents: Reach depths of about 100 meters (about 300 feet)., Can stretch across oceans and brings warmer temperatures , 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., The Gulf Stream, Deep currents: Movements of ocean water far below the surface, density driven because of temperature and salinity, intense pressure along the abyssal plain, 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, During an upwelling, nutrients come from these cold currents to fertilize surface currents,

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