Lobster traps, also known as POTS, are a type of fishing gear used to capture lobsters. They are typically made from wire mesh and have a funnel-like entrance that allows the lobster to enter but prevents it from escaping. The traps are baited with food to attract the lobsters and are then placed in the ocean or other bodies of water. Once the lobster enters the trap, it is unable to escape and is caught by the fisherman.