There is a history behind these awesome bunch creatures and it's so evolutionary that I needed at least a half to one page just to tell you about it.
History
The first major groups of amphibians developed in the Devonian period from lobe-finned fish similar to the modern coelacanth and lungfish,which had evolved multi-jointed leg-like fins that enabled them to crawl along the sea bottom. Some fish had developed primitive lungs to help them breathe air when the stagnant pools of the Devonian swamps were lacking in oxygen. They could also use their strong fins to hoist themselves out of the water and onto dry land if circumstances required it. Eventually, their bony fins would evolve into limbs and they would become the ancestors to all tetrapods, including amphibians, reptiles, birds, and mammals. Despite being able to crawl on land, many of these prehistoric tetrapodomorph fish still spent most of their time in the water. Amphibians evolved adaptations which allowed them to stay out for longer periods. However, they never developed the ability to live their entire lives on land, having a fully aquatic tadpole stage and still needing to return to water to lay their shell-less eggs.
History
The first major groups of amphibians developed in the Devonian period from lobe-finned fish similar to the modern coelacanth and lungfish,which had evolved multi-jointed leg-like fins that enabled them to crawl along the sea bottom. Some fish had developed primitive lungs to help them breathe air when the stagnant pools of the Devonian swamps were lacking in oxygen. They could also use their strong fins to hoist themselves out of the water and onto dry land if circumstances required it. Eventually, their bony fins would evolve into limbs and they would become the ancestors to all tetrapods, including amphibians, reptiles, birds, and mammals. Despite being able to crawl on land, many of these prehistoric tetrapodomorph fish still spent most of their time in the water. Amphibians evolved adaptations which allowed them to stay out for longer periods. However, they never developed the ability to live their entire lives on land, having a fully aquatic tadpole stage and still needing to return to water to lay their shell-less eggs.