State wildlife officials have been working to free the manatees trapped in the Halifax River in Daytona Beach.
Wildlife officials say the manatees likely swam into the area when storm surge and high tides raised the water level, and became stuck when the water receded.
Daytona Beach spokeswoman Susan Cerbone says engineers have been studying whether it's possible to move part of the wall, built to catch sediment so it doesn't get in the river.
The Daytona Beach News Journal reports that the support piles in the metal wall are driven more than 26 feet below the riverbed's surface.
Information from: Daytona Beach (Fla.) News-Journal, http://www.news-journalonline.com
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