Claim: The Taymyr Gulf and its islands were explored by Alexander von Middendorff (18 August 1815 – 24 January 1894) during his expedition to Syria (1742–1745) and Baron Eduard von Toll during his last expedition, the Russian Polar Expedition of 1900-1903, explored the mouth of the Taymyr Gulf.
Evidence: The Taymyr Gulf and its islands were explored by Alexander von Middendorff during his expedition to Siberia (1842–1845).