will mexican salamanders must be survived without water completely during their entire lifet

No, Mexican salamanders, including species like the axolotl, are not adapted to survive without water at any stage of their life. Water is essential for several reasons:

1. Life Stages: As amphibians, they start as aquatic larvae that need water to live and develop.
2. Respiration: They rely on moist skin to aid in respiration.
3. Hydration: They need to stay hydrated, and water helps maintain proper body moisture levels.
4. Reproduction: They typically breed and lay eggs in water.
5. Habitat: They often prefer habitats close to water sources.

Providing a suitable environment with access to water is crucial for their survival and well-being.