Amphibians are covered by a moist, permeable skin that plays a crucial role in their survival. Unlike reptiles, whose skin is covered by scales, amphibians have a skin that is soft and smooth, which allows them to absorb water and oxygen directly from their environment. This characteristic is essential because many amphibians, such as frogs and salamanders, live both in water and on land.
The skin of amphibians is also equipped with mucus glands that help keep the skin moist, preventing dehydration. Additionally, the moisture on their skin aids in respiration, as amphibians can exchange gases through their skin—a process known as cutaneous respiration. This dual capability of their skin not only helps in breathing but also in regulating their body temperature and maintaining hydration.