Animal migration is the traveling of long distances in search of a new habitat. Animals migrate for many different reasons. Some animals migrate to find better sources of food, water, or shelter. Other animals migrate to visit particular breeding grounds, rear their young, or to find warmer climates. The frequency of animals’ migrations also differs: Some animals migrate seasonally, others migrate once in a lifetime or only to breed, and others are nomadic and migrate wherever the best resources and environments are at that time.
Hermit Crab adults are terrestrial, but the larvae develop in the sea. The adults must migrate to the waters edge in order to reproduce and release their eggs into the water. See: