10 Critters That Can Regrow Body Parts (and How They Do It)

3. Starfish: The Stellar Regenerators of the Sea

Starfish, or sea stars, are iconic marine creatures known for their ability to regenerate lost arms and, in some cases, entire bodies from a single arm. This remarkable capability is facilitated by their decentralized nervous system and the presence of regenerative cells throughout their bodies. When a starfish loses an arm, cellular dedifferentiation occurs, where mature cells revert to a more primitive state, allowing them to proliferate and form new tissues. The regeneration of starfish is a slow but meticulous process, involving the formation of a blastema at the site of injury. This blastema is a hub for cellular proliferation and differentiation, guided by a network of signaling molecules and growth factors. The study of starfish regeneration has provided valuable insights into the mechanisms of tissue patterning and growth, shedding light on the evolutionary adaptations that have enabled these creatures to thrive in diverse oceanic environments. As we continue to explore the regenerative capabilities of starfish, we gain a deeper understanding of the fundamental principles that govern regeneration across the animal kingdom.