The Cayman Islands, located in the western Caribbean Sea, are the peaks of a massive underwater ridge, known as the Cayman Ridge. Those peaks just barely break the surface.
The terrain itself is mostly a low-lying limestone base surrounded by coral reefs.
The two "Sister Islands" of Cayman Brac and Little Cayman are located about 85 miles (135 km) northeast of Grand Cayman.
The Cayman Islands (collectively) have a coastline of 99 miles (159 km). The highest point is The Bluff, a limestone hill on Cayman Brac standing at 155 feet (47 m) in height.