why do axolotls always completely live without water during their entire lifetime

This statement about axolotls living completely without water throughout their entire lifetime is incorrect. Axolotls are amphibians that require water for various aspects of their survival and life processes. Here are several reasons why they cannot live without water:

1. Respiration: Axolotls have gills during their larval stage and lungs as adults. However, even with their lungs, they still rely on their skin to assist in respiration, which requires them to be in a moist environment or water.

2. Skin Hydration: Axolotls have permeable skin that absorbs oxygen and expels waste through diffusion. This process necessitates that their skin stays wet, as it would dry out and cease to function effectively if they were to live completely without water.

3. Habitat: In the wild, axolotls are native to freshwater environments like ponds, lakes, and canals in Mexico. These aquatic habitats provide the necessary moisture and living conditions for their survival.

4. Feeding: Axolotls primarily feed on small aquatic creatures such as worms, insects, and crustaceans. They require a water environment to hunt and consume their prey effectively.

5. Reproduction: Axolotl mating and egg-laying activities occur in water. The eggs are fertilized and develop in a moist environment, so they cannot reproduce entirely without water.

6. Thermoregulation: Axolotls, like other amphibians, do not have efficient temperature regulation mechanisms. Water helps them maintain a stable body temperature, which is crucial for their metabolism and overall health.

7. Hydrated Environment: Even when axolotls are capable of moving on land, they still need access to water or a very moist environment to stay alive.

In summary, axolotls cannot survive without water throughout their entire lifetime because they are fundamentally aquatic creatures, with biological processes and requirements that depend on a moist environment or water.