The country with the longest coastline in the world is Canada. With an extensive coastline that stretches over 202,080 kilometers (approximately 125,000 miles), Canada’s coastlines border three oceans: the Atlantic, Pacific, and Arctic. This vast expanse includes thousands of islands and inlets, contributing to its remarkable diversity of marine ecosystems and habitats. The long coastline plays a crucial role in Canada’s economy, supporting industries such as fishing, tourism, and shipping. Furthermore, it offers rich opportunities for outdoor recreation and tourism, showcasing Canada's natural beauty and cultural heritage.