There are several specie names to give. If we talk of the land animals, then the African Elephant tops the list. These giants can reach over 10 meters in length and 4+ meters in height. Their weight may go over 6 000 kg. However, if you compare them with the sea largest animals, they look like midgets. The largest sea animal is blue whale. These true giants can reach over 30 meters in length and their weight may amount to 180+ tonnes. Land cannot possibly support such huge forms of life in our days.