Seine nets are large fishing nets used to catch fish in shallow waters. They consist of a long net with floats on the top and weights on the bottom, creating a wall that traps fish. Fishermen typically deploy these nets from boats or from the shore, encircling schools of fish to capture them efficiently. There are different types of seine nets, including beach seines and purse seines. Beach seines are used near the shore, while purse seines can be used in deeper waters and are drawn tight like a purse to secure the catch. These nets are popular for their effectiveness in commercial fishing.