Ernest Shackleton was an Antarctic explorer who is remembered for his 1914-1917 Imperial Trans-Antarctic Expedition. He was an Irish-born British explorer who led the expedition, which aimed to cross the Antarctic continent from one side to the other. The expedition was unsuccessful due to the sinking of the ship Endurance, but Shackleton and his crew managed to survive and eventually return home. His leadership and courage during the expedition earned him a place in history as one of the greatest explorers of all time.