What is the working principle of ordinary fishing nets?

The principle of fishing net is mainly to use the gregarious nature of fish. There is lead in the fishing net. When the net was dropped, it fell apart and fell into the water. Because the lead is heavy and vertical, put the fish in. Fishing net, namely "fishing net", is an indispensable fishing tool for fishery production. Coastal fishermen first used simple nets to fish at the seaside. Fishing nets such as Liao net and rod net appeared in shallow sea in Ming Dynasty. After the Qing Dynasty, offshore fishing nets appeared. Most inland fishermen catch with small fishing gear. Among them, trawls and drift nets are mostly used for offshore fishing, and sticky nets are mostly used for inland river and offshore fishing.

Pulling a net is a big net. The mesh is about tens or hundreds of feet long, with a pendant and a float. Ministers at both ends. When fishing, one end of the rope is tied to the shore, then the net is loaded with a sampan, and the other end of the rope is cast on the sea surface, and then the rope is pulled ashore. When pulling the net, people stand in two rows, singing songs, and quickly close the net, which is also called "seeing the net", which best embodies the spirit of fishermen Qi Xin's cooperation. Pulling nets is suitable for places with flat seabed and many beaches.

Drift net, also known as "netting", consists of net and awn. Mangzi, a thin bamboo pole, has a small red and green flag on it and a big buoy at the bottom. When fishermen go out to sea, they usually use a single-covered "foot" boat with a lot of nets and awns. When fishing, they have to lay a awn, and then lay one or more nets to connect each awn with the net. This kind of net has ups and downs. Tie the net to the boat after casting it. Mesh and awn form a net wall in the sea. When fish swim here, they are often caught in the net and can't advance or retreat.