Manatees huddle up in Three Sisters Spring
When the weather turns cold, manatees flock to Three Sisters Spring in Crystal River, Florida.
Manatees can become sick in water 68 degrees or less, so they flock to the warmer waters of the springs. The water temperature stays at a constant and comfortable 73 degrees.
These shots were taken by SkyFOX Drone on January 5, 2018.