The sea creature known for its remarkable ability to regenerate lost limbs is the axolotl. This unique salamander, native to Mexico, can regrow not only limbs but also parts of its heart and brain. The axolotl's regenerative capabilities involve complex biological processes, including the ability to revert mature cells to a more embryonic state, enabling them to proliferate and differentiate into various cell types. This fascinating trait has made axolotls a subject of research in regenerative medicine, as scientists seek to uncover the mechanisms behind their extraordinary healing abilities for potential applications in human medicine.