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Processing of optical remote sensing information requires a knowledge of dependence between backscattering and beam scattering coefficients. Until recently this dependency was primarily derived from fifteen angular scattering coefficients measured more than 30 years ago by Petzold The results of these measurements show that coastal waters can be divided into two distinct types: one -similar to the waters of Petzold experiment near the California coast, and the other -biologically more pure type [3] that was experimentally detected during LEO-15 experiment in 2001. This presentation analyzes more than 875 angular scattering coefficients measured in different areas of World Ocean (873) and Lake Baykal (2). The main difference between Petzold-type coastal waters and biologically pure waters is characterized by the dependence between backscattering and beam scattering coefficient