Thermal Stratification
Thermal Stratification
Paragraph 1：Physical characteristics of aquatic environments at different depths, such as salt level, light, inorganic nutrients, degree of acidity, and pressure, all play key roles in the distribution of organisms. One of the most important physical features is thermal stratification.
Paragraph 2：When solar radiation strikes water, some is reflected, but most penetrates the surface and is ultimately absorbed. Although water may appear transparent, it is much denser than air and absorbs radiation rapidly. In clear water, 99 percent of the solar radiation is absorbed in the upper 50 to 100 meters. Longer wavelengths of light are absorbed first; the shorter wavelengths (which have more energy) penetrate farther, giving the depths their characteristic blue color.
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