Lobster trap marker buoys. lobster trap or lobster pot is a portable trap that traps lobsters or crayfish and is used in lobster fishing. Lobster traps are constructed of wire and wood. An opening permits the lobster to enter a tunnel of netting. Pots are usually constructed in two parts, called the "chamber" or “kitchen”, where there is bait, and exits into the “parlour”, where it is trapped from escape. Lobster pots are usually dropped to the sea floor about a dozen at a time, and are marked by a buoy so they can be picked up later.