What advantages over an aquatic organisms does a terrestrial organism have with regard to obtaining oxygen for respiration ?

Explanation

Terrestrial organisms take up oxygen from the atmoshphere whereas aquatic animals obtain oxygen from water. Air contain more `O_2` as compared to water. Since the content of `O_2` in air is high, the terrestrial animals do not have to breathe faster to get more oxygen. Therefore, unlike aquatic animals, terrestrial animals do not need adaptations for gasecous exchange.