Yes, lobsters can regrow lost claws. After a claw is detached, the animal seals the wound and begins developing replacement tissues. The new claw grows as a regenerating limb bud and becomes externally visible during a later molt, when the lobster sheds its old exoskeleton. The replacement is often...
Starfish regrow lost arms through a process called regeneration. After an arm is injured or detached, the wound closes, cells near the injured area change their behavior, and new tissues gradually develop. Over time, the growing arm can rebuild its skeletal elements, muscles, nerves, and tube feet....