Canada has the longest coastline in the world, stretching approximately 243,042 kilometers (151,019 miles). This vast coastline borders three oceans: the Atlantic, Pacific, and Arctic, including countless¹ islands, fjords, and bays. Due to its northern geography, much of Canada's coastline remains² remote and sparsely³ populated.

Other countries with long coastlines include Indonesia (54,716 km), Russia (37,653 km), and the USA (19,924 km). However, Canada's extensive Arctic archipelago and intricate coastal⁴ geography secure its top position.

加拿大拥有世界上最长的海岸线，总长约243,042公里（151,019英里）。其海岸线濒临大西洋、太平洋和北冰洋，涵盖众多岛屿、峡湾和海湾。由于北部地理环境，加拿大大部分海岸线人烟稀少。

其他海岸线较长的国家包括印度尼西亚（54,716公里）、俄罗斯（37,653公里）和美国（19,924公里）。但加拿大广袤的北极群岛和复杂的海岸地形使其稳居第一。