Our tour this day was guided by a "step-on". This is an individual who steps onto a tour bus to describe the local environment.
Our step-on gave a lecture on the anatomy of the lobster. She used a plastic, presumably anatomically correct, model to describe such important things as how to determine the gender of a lobster. You may ask, "Who cares, other than the lobsters?" Female lobsters sometimes have roe (eggs) which many people like to eat.
The funny looking cages to her (the step-on's) right are lobster traps. Each trap is divided into three sections. The center section is a baited area, called the "kitchen". The two side sections are called the "living rooms". These two side sections are spaces that lobsters go when another lobster enters the trap.