The big net has floats to keep one side on the surface of the ocean. The other side has lead to keep it on the bottom of the ocean. This makes the net like a fence or wall around the fish. They can be either traped against a section of the shore, or completely circled by the big net. Power boats carry the fish over to a beach where they can be unloaded.
People then use buckets to carry the fish from the boats to trucks.
In this catch there were enough fish to load up 3 trucks. This is lots of loads of buckets, and so many people work at this. These boats were nearly full of fish earlier. This is after 2 trucks were loaded up. Some fish were sold while others were still being loaded onto the truck.