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Ocean Gyre
A gyre is a circular ocean current formed by Earth's wind patterns and the forces created by the rotation of the planet
The Equator forms its southern boundary, but it is bounded elsewhere by the Horn of Africa, Sri Lanka and the Indian subcontinent, and the Indonesian archipelago. They are heated by the warm tropical waters of the Caribbean Sea (Gulf Stream) and equatorial Indian Ocean (summer monsoon current). Their calm centers have traditionally been regarded as oligotrophic, or nutrient-poor, because they have few concentrations of the organic chemicals that support producers, such as algae and plankton, in the ocean food web.
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