Chilly manatees huddle together for warmth

There's been a huge increase of manatees seeking shelter in a spring in Florida in the US.

The temperature of the sea has fallen, so they've had to huddle together in a popular swimming spot.

It's estimated that there are over 500 manatees there.

Check out this clip of the manatees huddling together in the water.

Footage courtesy of Crystal River.

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