is it bad for axolotl's health of living without water for very long period of time

Yes, living without water for extended periods can severely impact an axolotl's health and can be life-threatening. Here are the reasons why:

1. Respiration: Axolotls, like other amphibians, absorb oxygen through their skin (cutaneous respiration) as well as through their lungs. When out of water, their skin can quickly dry out, impeding their ability to breathe.

2. Dehydration: Axolotls need to stay moist to prevent desiccation. Dehydration can lead to a range of health issues, including organ failure.

3. Osmoregulation: Axolotls use water to regulate the balance of salts and other dissolved substances in their body. Without water, they cannot maintain this balance, leading to metabolic problems.

4. Thermoregulation: Being cold-blooded, axolotls depend on their environment to regulate body temperature. Water helps them stay cool, and without it, they may overheat.

5. Digestion: Axolotls often need water to digest their food properly. Without water, their digestive system may not function correctly.

6. Immune Function: A moist environment is critical for the axolotl’s immune system. Dryness can weaken their immunity, making them more susceptible to infections and diseases.

7. Behavioral Stress: Prolonged absence from water can cause significant stress to axolotls, which can lead to various health problems.

To maintain an axolotl's health, it's crucial to provide a proper aquatic habitat with clean water. If an axolotl needs to be removed from water for any reason, it should be done quickly and with care, ensuring that it is returned to its aquatic environment as soon as possible. In temporary situations where an axolotl must be out of water, such as during handling or transportation, it's important to keep the animal moist using damp towels or a container with a wet sponge.