The 78th Parallel North is a circle of latitude located 78 degrees north of the Earth's equatorial plane. It runs through the Arctic region, primarily over the Arctic Ocean and parts of the surrounding landmasses. This parallel is significant for understanding climate patterns and the distribution of polar ecosystems. At this latitude, the sun does not set during the summer months, resulting in continuous daylight, while in winter, it experiences polar night, where the sun does not rise. The Arctic Circle is located at approximately 66.5 degrees north, making the 78th Parallel North a region well within the Arctic zone, influencing wildlife and human activities in areas like Greenland and Northern Canada.