80 miles from Orlando, Florida hides a spring clear enough to see the sand below: Officials say

Wikimedia Commons/CityofCrystalRiver

Florida’s last unspoiled spring habitat

Three Sisters Springs sits on Florida’s Gulf Coast in Crystal River, about 80 miles west of Orlando. Three underground vents feed this natural inlet, and the water that comes up is so clear you can see straight to the sandy bottom like looking through a pane of glass. The springs belong to the Crystal River National Wildlife Refuge, the only federal refuge in the country created specifically to protect the Florida manatee. What draws them here, and what draws you, starts with the temperature. Shutterstock

Saved from condos and bottled water deals

Developers once planned to bulldoze this land for condominiums. The spring water itself was going to be bottled and sold. Then in 2008, local groups started fighting back. A coalition of local, state and federal partners bought the property in 2010 for $10.5 million. Crews hauled out debris, lined the eroded banks with boulders and replanted native trees along the shore. Today Three Sisters Springs preserves the last unspoiled, undeveloped spring habitat in Kings Bay. Wikimedia Commons/Department of the Interior

Big Sister, Little Sister and Pretty Sister

The spring takes its name from three separate vents that feed the lagoon. Locals call them Big Sister, Little Sister and Pretty Sister. Big Sister runs the deepest, and that is where manatees gather thickest in winter. Along the bottom, sand boils bubble up where underground water pushes through the sand floor. The turquoise color, the clarity and those rolling boils on the bottom make the whole place look like a natural aquarium with no glass walls. Wikimedia Commons/Steve Hillebrand

Warm water pulls manatees in by the hundreds

The spring water holds steady at about 72 to 74 degrees all year long. When the Gulf of Mexico turns cold, manatees swim inland to stay warm. These animals grow to about 10 feet long and weigh 800 to 1,000 pounds. You will spot big adults drifting slowly through the pools, and smaller calves tucked close beside their mothers. On warmer days, many head back out to the Gulf to feed, then return as soon as temperatures drop again. Wikimedia Commons/Steve Hillebrand

One December day brought 528 manatees

Manatee season runs roughly from mid-November through the end of March. The coldest weeks of January and February pack the most animals into the springs. On a single day in December 2014, observers counted 528 manatees in the water here.

Across the wider Kings Bay area, hundreds use the warm-water network through a typical winter. The math is simple: colder air outside means more manatees inside the spring. Wikimedia Commons/Steve Hillebrand

A quarter-mile boardwalk right above the water

A flat, quarter-mile boardwalk loops around the spring and puts you directly above the action. Viewing platforms let you look straight down through that clear water to watch manatees glide below. You can follow them drifting through the “run” that connects the spring to the river. The path works for all ages and all mobility levels, including wheelchairs. Volunteers station themselves along the route to answer questions and help you spot wildlife in the shallows. Shutterstock

Float alongside wild manatees in the open water

Crystal River is one of the only places in the country where you can legally get in the water with wild manatees. Swimmers and snorkelers reach the spring by paddle craft from April 1 through Nov. 14. During manatee season the spring pool closes to paddlers, and the boardwalk takes over. But guided snorkel tours still run through the wider Kings Bay and Crystal River all winter, where manatees gather in big numbers just outside the springs. Shutterstock

Paddle through turquoise water on a silent kayak

Kayaks, canoes and paddleboards can reach Three Sisters Springs by water from Kings Bay. No motorized boats are allowed inside the spring itself, so the only sounds are paddles and birds. In summer the water clarity peaks, and a clear-bottom kayak lets you watch the sandy bottom scroll past beneath you. Even outside manatee season, the bright turquoise basin and those sand boils rolling up from the floor give you plenty to look at on the water. Shutterstock

Herons, otters and alligators share the refuge

More than 100 species of native and migratory birds use this refuge. Great blue herons wade through the shallows along the banks. Otters slide through the waterways, and alligators sun themselves on the edges of the wetland. The whole area is a restored wetland thick with Florida plants and animals. Move slowly, keep quiet and let the wildlife come to you, because out here, patience pays off more than covering ground. Shutterstock

Trails wind past wetlands and a hidden spring

Nature trails lead you past the wetlands, Lake Crystal and Magnolia Springs on foot. The paths cut through hardwood forest, red cedar and oak canopy that feels like a different world from the open spring.

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That restored wetland along the way filters runoff before it reaches Kings Bay. Magnolia Springs is a quieter spot where manatees sometimes rest away from the crowds. If you want a greener, slower side of the refuge, the trails deliver it. Shutterstock

Glass-bottom boats ran here back in the 1950s

People have come to these springs for more than a hundred years. Early fishermen reached the water by boating through a winding, tree-lined creek. Visitors once filled jugs with the clear spring water and carried them home. By the 1950s, a local operator was running glass-bottom boat tours right into the springs. The draw has not changed. The same clear, turquoise water that pulled in those first visitors still brings people from around the world today. Wikimedia Commons/Steve Hillebrand

Keep it calm so the manatees keep coming back

Never touch, chase or feed the manatees. Keep your voice down and move slowly near the water. The refuge encourages passive observation, which means you watch calmly and give the animals space. There is no water access from the boardwalk and no land access from the water, so each experience stays separate. These rules protect the manatees and the fragile spring banks that hold the whole system together. Wikimedia Commons/Department of the Interior

Visit Three Sisters Springs in Crystal River, Florida

You can reach the springs by land through the Three Sisters Springs Center at 917 Three Sisters Springs Trail in Crystal River. Land access runs from 8:30 a.m. to 4:30 p.m., with the last admission at 3:30 p.m. Holiday closures may apply, so check the official website before you go. The best manatee viewing hits on cold winter days from mid-November through March. To get in the water, launch a kayak or paddleboard from Hunter Springs Park or another Kings Bay access point, or book a guided tour. This article was created with AI assistance and human editing. Read more from this brand:

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