A cast net is a type of fishing net that is thrown by hand in a circular motion. It is typically used to catch bait fish, shrimp, and other small aquatic creatures. The term 'cast net' comes from the fact that it is cast into the water in order to capture its prey. The term 'SEINE' is also used to refer to a type of fishing net, but it is usually larger and is operated by two or more people. Seines are typically used to catch larger fish such as salmon and tuna.