An improved lobster trap composed of a one-piece molded plastic hollow trap body defining a main interior chamber, a door to close and open and gain access for removing lobsters trapped in the chamber, and a lobster trap opening provided with a guide path for entering lobsters and which guide path terminates in the central zone of the trap in spaced relation from the walls, top and bottom, so that a lobster following the guide path would fall into the chamber, attracted by bait. The body and the door are of openwork construction, said body having a plurality of openings in spaced relation from one another throughout the surface thereof.