what is a amphibians'
Amphibian: Amphibian, (class Amphibia), any member of the group of vertebrate animals characterized by their ability to exploit both aquatic and terrestrial habitats. The name amphibian, derived from the Greek amphibios meaning âliving a double life,â reflects this dual life strategyâthough some species are permanent land dwellers, while other species have a completely aquatic mode of existence.