1. Trawling and trawling: Trawling is a fishing method in which a fishing boat drags a bag-shaped net and forces the fishing object into the net. You can drag and drop fishing groups actively and flexibly. The fishing targets are mainly fish, shrimp and molluscs at the bottom and near the bottom.

2. State Grid and State Grid Operation: Use a long belt-shaped or bag-shaped net to start fishing on both wings. The upper edge of the net is tied with a float, and the lower edge is hung with a net pendant. When working, the net is spread vertically in the water, which is similar to a circular wall with dense fish.

3. gill netting and gill-flowing operation: gill netting is a form of belt, which is distributed in the waters where fish are active during operation, and catches the catch with nets or nets.

4. The salary level of fishing at sea may be affected by many factors, such as the location of the sea, the size and equipment of the ship, etc. So the specific salary level needs to be determined according to the actual situation.