Patent ID: 7721483

Claim:
A harvesting device for zooplankton or other micro organisms in a body of water, comprising: a bubble diffuser for being towed behind a vessel and being submerged in the body of water, said bubble diffuser being arranged for releasing small air bubbles into the body of water, so that the air bubbles attach to zooplankton and bring the zooplankton near a surface of the body of water; and a fine mesh trawl for being towed after trawl lines behind the vessel and near the surface of the body of water, for collecting the zooplankton near the surface of the body of water, said trawl being provided with a buoyancy collar extending along the surface of the body of water and arranged in a V-shape in which an apex is directed rearwards, and with forward directed branches of said collar being towed by said trawl lines with one or more first deflectors, wherein said trawl is provided with a skirt extending down from said buoyancy collar and is provided with a lead line, and said skirt holds a bottom net for collecting the zooplankton.