What features of the external structure of amphibians contribute to their life in water, and which on land?

Amphibians are the next stage of evolution that connects aquatic animals with terrestrial ones.

Features of amphibians that contribute to life in the water: simplified body structure (flat head, membranes between the fingers), mucous discharge on the skin, the structure of the eyes and nostrils.

Features of amphibians that help to survive on land: the body consists of a head, torso, limbs with fingers, the structure of the organs of vision, hearing, smell (for example, the skin serves as a respiratory organ, eyelids, eardrums appear).