This June 2004 file photo, provided by the Florida Keys News ...

Mon Mar 20, 10:06 AM ET

This June 2004 file photo, provided by the Florida Keys News Bureau, shows kayakers paddling through a mangrove forest near Big Pine Key, Fla., in the lower Florida Keys. Visitors who kayak on Keys shallow waters can enjoy a plethora of flora, fauna and underwater life in the unique ecosystem.

(AP Photo/Florida Keys News Bureau, Bob Krist)