What kind of shelter does a starfish need?

Starfish do not typically build or require shelters. They are motile marine invertebrates and do not construct permanent structures like nests, burrows, or webs for protection. Starfish have a unique body structure and defense mechanisms to survive in their respective habitats. Most starfish species can regenerate lost arms, and their hard exoskeletons provide them with adequate protection against predators. They can move along the substrate or rocks to find food or seek refuge in crevices when necessary.