High Quality Content by WIKIPEDIA articles! A scientific echosounder is a device which uses SONAR technology for the measurement of underwater physical and biological components—this device is also known as scientific SONAR. Applications include bathymetry, substrate classification, studies of aquatic vegetation, fish, and plankton, and differentation of water masses. Currently, the only three manufacturers of scientific-quality digital echsounders commonly used for resource assessment are Simrad, 'BioSonics' , and HTI (Hydroacoustic Technology, Inc.).

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