The largest continent by land area is Asia. Covering approximately 17.2 million square miles, Asia accounts for about 30% of the Earth's total land area and is home to a diverse range of cultures, languages, and ecosystems. The continent is bordered by the Arctic Ocean to the north, the Pacific Ocean to the east, the Indian Ocean to the south, and Europe and Africa to the west. Major countries in Asia include China, India, and Japan, among others. Its vast terrains encompass mountains, deserts, forests, and rivers, contributing significantly to the world's biodiversity and population.