The trap comprises a number of parts. The lead net is a long straight net that guides the fish into the wings where the fish sometimes swim for a period before entering the second adapter and the adapter. The openings gradually become narrower and narrower and the fish are guided on into the fish chamber. The first entrance to the fish chamber is equipped with a seal exclusion device (SED) that effectively stops seals from reaching the catch. The fish pass through the SED and swim on through the final opening. Finally, the fish find themselves caught between an arrangement of nylon threads set at narrow intervals under tension at the far end of the fish chamber. The purpose of the nylon threads is to make it difficult for the fish to find their way back out of the fish chamber.
The lead net and wings are made of polyethylene netting. The second adapter and the adapter, which are more frequently attacked by seals, are made from stronger materials (Polyethylene Premium Plus and Dyneema). The trap is manufactured in such a way that sharp angles and tight corners are avoided. Tight corners can otherwise be used by the seals as hunting spots, into which they can corral the fish before eating them.
We use the highest quality rope, leaded rope and floats in our nets.
