A water density spiro raw survey apparatus and method of application

A water snails Density apparatus belonging parasitic (withdrawing blood) and aquatic snails prevention of echinococcosis aquaculture art. This means a set screw block (1) and a cutting device composed of a cutting device is a knife (2) is movable, expandable nylon silk reel (3) and a thin wire connecting the cutter (4). According to the present invention the growth characteristics and distribution of aquatic snails, aquatic snails developed a Density apparatus and method can save a lot of time and labor investigation aquatic snails density, improve the accuracy of the survey results can be used to investigate different depths water, aqueous layer was different, a different distance, full three-dimensional density of aquatic snails.