amphibian

(plural — amphibians or amphibia; pronunciation: the letters ‘phi’ are said with an ‘f’ sound as in “fig” — for the right pronunciation, please click here)

any kind of animal that can live in water and on land i.e. they spend early stages of their life in water taking oxygen from water and spend their adult stage on land and in water taking oxygen from air; there are more than 6000 (about 7000) species (kinds) of amphibians all over the world  — frogs, toads, salamanders, newts and gymnophiona are amphibians,