do mexican salamanders completely survive outside of water during everytime of their whole lifetime

Mexican salamanders, also known as axolotls (Ambystoma mexicanum), are unique among salamanders in that they do not undergo the typical metamorphosis process that leads to a fully terrestrial adult stage. Instead, they retain their larval features throughout their lives, which is a phenomenon called neoteny.

While axolotls are primarily aquatic and spend most of their lives in water, they are capable of surviving and functioning outside of water for short periods. Here are some key points about their ability to survive out of water:

1. Respiratory System: Axolotls have gills and lungs. Their primary mode of respiration is through their gills, which are external and branched, allowing efficient gas exchange in water. They can also breathe through their lungs and skin when exposed to air, although this is not as efficient.

2. Skin Hydration: Axolotls have moist, permeable skin that helps them absorb oxygen and stay hydrated. This feature allows them to survive out of water for brief periods, but they still need moisture to prevent their skin from drying out.

3. Activity Patterns: Axolotls are primarily noct