When hundreds or thousands of coral polyps build their skeletons close together, they create a calcium carbonate structure that provides habitat and food for a variety of organisms. This is known as a coral reef. Explore a virtual coral reef. More Info - Common Coral Forms; More Info - Fringing Reefs
Arch Cape is an unincorporated community in Clatsop County, Oregon, United States. It is located along the Pacific coast about 4 miles south of Cannon Beach. The Arch Cape post office, established in 1912, has ZIP code 97102. The community was named for a natural arch in the coastal rocks.
The Oregon Caves National Monument was designated in 1909 by President Taft, making it one of the earliest designations in the country. The monument, located in southern Oregon, leads visitors on a 90-minute, 0.6-mile guided tour through marble-walled passageways and into deep, underground chambers.