Lower Keys and Key West
Marquesas Keys is the only known atoll in the Atlantic Ocean. The circle of islands is about 3.5 miles across and 22 miles west of Key West. Marquesas Keys is a bird sanctuary and National Wilderness Area.
Wrecks in this area attract large marine life and huge clusters of coral heads can be found off the entire southern edge of the islands in about 8-12 feet of water. Several of the islands have long, white, sandy beaches.
This is an area where many go to fish, so look out for fishing lines. The depth ranges from 5-30 feet.