Hundreds of manatees have gathered at a freshwater spring to keep warm during cold weather.
The authorities said they are “seeking refuge from the chilly temperatures”.
The manatees surprised locals at Three Sister Springs in Crystal River, Florida, US.
The Southwest Florida Water Management filmed them with a drone.
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The clip shows the animals enjoying the balmy water by the shore as snorkelers approach for a closer look.
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A spokesperson for the water agency said: “Hundreds of manatees have been seeking refuge from the chilly temperatures this week.
“This is a great demonstration of why the District recently restored the shoreline around Three Sisters Springs.
“The project repaired the eroded shoreline and will help prevent future erosion caused by manatee and human activity.”
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Officials said the project was aimed at “improving water quality, restoring habitat, and increasing safety for visitors”.
The drone footage went viral with 138,000 views and hundreds of comments.
One local said: “Love these gentle giants!”
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Ashley commented: “I got the amazing pleasure of swimming with these phenomenal creatures.
“Life time memories.”
Darlene wrote: “I can definitely see myself snorkelling with these beasts.”
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