Pot: a cage or basket made from various material (wood, wicker, metal rods, wire netting, plastic, etc., deployed near or on the sea floor or river bed and usually baited to attract mobile animals who enter an opening through which they cannot exit. Captured animals are typically harvested and sold live.
Probably the best known is the lobster pot (lobster trap), which is connected by a vertical line of rope to a buoy on the surface. Lobster pots may be individual or connected with rope in a series. Crab pots may be repurposed lobster pots, in the case of Jonah and peekytoe crab, or large wire and mesh traps for deep sea red crab. Fish pots of different designs can catch groundfish such as cod or even eels and shrimp.