CRYSTAL RIVER, Fla. — Incredible video of Manatees gathered at Three Sisters Springs in Crystal River, Florida Sunday morning.
Air temperature at dawn was 30F and water temperature in spring was 73F.
Cold weather can weaken manatees' immune systems and eventually kill them.
Adult manatees can weigh up to 1,200 pounds and grow to be 10 feet long. During the warmer months, manatees leave Florida and can be found as far west as Texas and as far north as Massachusetts - although sightings along the Gulf Coast and near the Carolinas are also common.
Information from the Associated Press was used in this report.