The Hermit Crab
The Hermit Crab unlike other crabs, has a soft vulnerable abdomen. This makes them easy targets for predators, so to keep them selves safe and sheltered they find abandoned shells, which become a protective home. When they eventually find a shell that fits, they pull themselves inside, and leave leaving several legs and its head outside the shell. It then carries its home wherever it goes until the time comes for it to find a new larger one because of its growth. Living on the seashore, in tide pools, and on the sea bottom in deeper water, hermit crabs scavenge their food.