How do sea stars regenerate lost limbs?

Sea stars regenerate lost limbs through a process of cell division and differentiation. After losing an arm, specialised cells in the central disc of the sea star initiate regeneration. These cells develop into new muscle, nerve, and skeletal tissue. Some species can regenerate a complete body from a single arm if it includes part of the central disc. This ability provides an advantage in escaping predators while maintaining survival and mobility.