do axolotls must be completely live without water in everytime of their lifetime

No, axolotls do not need to live without water at any time in their lifetime. As fully aquatic animals, they require water to survive and perform essential life functions:

1. Respiration: Axolotls breathe using gills when they are young, and as adults, they use their lungs and skin for respiration. Their skin, which is essential for gas exchange, must stay moist.

2. Skin Hydration: Axolotl skin needs to be kept wet to prevent dehydration and maintain proper gas exchange. Dry conditions can lead to health issues.

3. Habitat: They live in freshwater environments such as ponds and canals, where they hunt for food, feed, and find shelter.

4. Reproduction: Axolotls breed and lay eggs in water. The entire reproductive process occurs in an aquatic environment.

5. Health: Living without water can lead to skin infections, dehydration, and other health complications, potentially resulting in death.

In summary, axolotls are not adapted to live out of water at any stage of their lives. They need water to maintain their health, respiration, and overall well-being. Providing them with a suitable aquatic habitat is essential for their survival and proper care.