Never, ever buy a hermit crab. They are not “starter pets” or trinkets. Crabs are complex, sensitive animals who want to live in the wild, not in a cage. Even the most well-meaning person who purchases crabs will never be able to give them the life that they deserve.
That's Kim Johnson's word in PETA (PEOPLE FOR THE ETHICAL TREATMENT OF ANIMALS). And here I just take the pictures, will never catch it, let alone to buy them.