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As seawater depth increases, the pressure exerted by the water above also increases. This relationship is primarily due to the weight of the water column above a given point. In seawater, pressure increases approximately by one atmosphere (101.3 kPa or about 14.7 psi) for every 10 meters (or about 33 feet) of depth. Therefore, at a depth of 100 meters, the pressure would be roughly 10 atmospheres, or 1,000 kPa. This increase in pressure affects various physical and biological processes in the ocean, influencing everything from marine life adaptations to the behavior of seawater itself. Understanding this relationship is crucial for underwater exploration, engineering, and environmental monitoring, as it helps in predicting how pressure can affect instruments and organisms at different depths.