A cast net is a type of fishing net designed to catch small fish and other aquatic creatures. It is typically made of mesh material and has weights around the edges, allowing it to sink quickly when thrown. Fishermen use a specific technique to throw the net, spreading it out in a circular shape to cover a larger area of water. Cast nets are commonly used in shallow waters, such as estuaries and coastal areas, where small fish like shrimp and baitfish are abundant. They are popular among both recreational and commercial fishermen for their effectiveness and ease of use.