The United Caribbean is a steel cargo ship 147' long and located about 50 feet below sea level that was deliberately sunk to become a part of the Palm Beach artificial reef program. The ship was built in 1969 and, by the early 1990's, it was being used by smugglers to illegally ferry people and drugs. The ship eventually became part of the Palm Beach Artificial Reef Program and was sunk in 2000.
The Caribbean is one of the wrecks in the wreck triangle. Because of the close proximity to two other wrecks and a reef, it populated very quickly. Many of the same marine residents that occupy the Emperor can be seen on the Caribbean.