FIELD: mariculture, in particular, commercial fishery. SUBSTANCE: apparatus has carcass stretched with netted fabric and provided with inlet openings disposed in trough bottom which is positioned between upper and lower bases of carcass. Trough is positioned in plane extending in parallel with carcass bases. Lower part of trough has negative buoyancy and upper part has positive buoyancy. EFFECT: increased efficiency, simplified construction and increased yield. 2 dwg
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