How does the hermit crab's respiratory system function?

Hermit crabs breathe through gills, which are located in their thorax and require a moist environment to function effectively. Water is drawn in through the opening of their shell, allowing oxygen to be extracted as it passes over the gills. Hermit crabs also have specialized structures that help them maintain moisture and facilitate gas exchange. This adaptation allows them to thrive in both aquatic and terrestrial environments, as long as they stay hydrated.