When you consider candidates for the largest living thing on earth, there may be several different things that come to mind.
Perhaps the blue whale, the largest mammals known to inhabit the earth, growing up to 30 metres long (that’s 3 double-decker buses end to end!) and weighing around 181 metric tonnes.
There are also some gigantic trees in the world that could be candidates for the top spot, the Giant Sequoia tree which are native to the Sierra Nevada Mountains of California can grow as tall as 82 Meters High! With their girth reaching up to 15 metres across, the tallest of these being General Sherman which is the largest single stem tree on earth!