Family

Most Florida springs drop off fast into a deep boil. Alexander is the exception: the basin shelves gradually across a sandy bottom, so toddlers can wade a long way out while older kids swim to the vent. That single feature makes it the spring to pick with a mixed-age group. It is also one of the few springs where snorkelling is genuinely rewarding at shallow depth, and canoe rentals run the Alexander Springs Creek downstream through palm hammock. Being inside the national forest, it is quieter than the state parks nearer Orlando.

Anastasia gives you two completely different waters within walking distance. The Atlantic beach is wide and firm enough to walk for miles, with real surf. Salt Run, the tidal lagoon behind it, is protected, waist-deep in most places and the best beginner paddling in the region - rentals for kayaks, paddleboards and small sailboats operate there in season. The campground is one of the best in the state system, tucked into the maritime hammock. St. Augustine’s old town and its fort are ten minutes away, which makes this an easy base for a few days.

Annaberg is where the history of these islands becomes concrete. The ruins of a Danish sugar plantation - windmill tower, boiling bench, slave quarters, factory - stand on a hillside above Leinster Bay with an interpretive trail through them, and the National Park Service does not soften what happened here. The windmill tower is climbable and the view runs across to Tortola and the British Virgin Islands. Cultural demonstrations of baking, weaving and cooking run on some days. It takes under an hour, is mostly shaded, and gives context to a trip that is otherwise all beaches.

Anne’s Beach is barely a beach in the conventional sense and that is exactly why it works with very small children. The water off Lower Matecumbe is so shallow that you can walk out several hundred feet and still be at knee height, warm as a bath in summer, with a soft bottom. A boardwalk runs behind it through the mangroves to a second stretch of sand. Parking is roadside and limited, there are restrooms but no concessions, and kiteboarders use the far end on windy days. It is free, which makes it the cheapest good hour in the Keys.

Loxahatchee protects the northernmost remnant of the Everglades system, and it delivers the same wildlife as the national park without the two-hour drive from Palm Beach. The Cypress Swamp Boardwalk is a shaded half-mile loop through a genuine cypress dome, and the Marsh Trail runs out over impoundments where herons, egrets, purple gallinules and alligators are all routine sightings from the levee. A canoe trail runs through the marsh for those with their own boat. It is quiet, cheap and easy with young children, and the visitor centre is worth twenty minutes.

Most of the Keys have very little actual beach; Bahia Honda is the exception and it is why the park fills early. Sandspur Beach shelves so gently that children can walk out a long way in warm, clear water, and Calusa Beach on the other side is even calmer. The ruined Flagler railroad bridge arcs overhead, half of it removed, which makes the whole place look like a film set. Snorkelling is decent close in around the rocks though not reef-quality. It is a two-hour drive from Key Largo, so this works best as part of a Keys trip rather than a day out from Miami.

Carolina’s balneario is the practical San Juan beach: broad sand backed by palms and sea grape, with the full public-beach infrastructure of lifeguards, restrooms, showers, picnic shelters and a playground, plus a large paid lot. It sits five minutes from the airport, which makes it the obvious answer to a long layover or a last afternoon before an evening flight. The Atlantic here has more wave action than the reef-protected beaches on the east coast, so supervise smaller children and use the lifeguarded sections. Food kiosks operate at the entrance.

Luquillo is the beach most Puerto Rican families use, and it is set up accordingly: a reef offshore knocks the swell down so the water inside is flat and shallow, there are lifeguards, showers, restrooms and shade under the coconut palms. It also has one of the island’s best casual food scenes immediately behind it - a strip of around sixty kiosks selling alcapurrias, empanadillas, fresh fish and cold drinks, which turns a beach afternoon into a proper meal. The eastern end has an accessible section built for wheelchair beach access. El Yunque is twenty minutes away, so the two pair naturally.

Escambrón is an unlikely thing: a small reef-sheltered beach with real snorkelling inside the city, a few minutes from Old San Juan. The reef breaks the Atlantic swell so the cove stays calm, and there is enough structure underwater - coral heads, some submerged ruins - to hold sergeant majors, parrotfish, wrasse and often a turtle. Being a public balneario it has lifeguards, restrooms, showers and shade, which makes it far more practical with children than the open beaches along Condado. Skip it after heavy rain or on a big north swell, when visibility collapses.

Seven Seas is the public balneario nearest the Fajardo ferry terminal, and it is a genuinely good family beach in its own right rather than just a place to wait for a boat. The bay is protected, so the water is shallow, warm and calm a long way out, and it has the full public-beach kit: lifeguards, restrooms, showers, picnic shelters, kiosks and camping. From the eastern end a short trail leads over the headland to Playa Escondida and Playa Colora, two rougher, emptier coves worth the twenty-minute walk. The Laguna Grande bio bay tours launch nearby.

Bathtub Reef is exactly what the name says. A sabellariid worm reef runs parallel to the shore a short way out, and at low tide it breaks the surface and encloses a shallow lagoon where the water is flat, warm and clear. Children can stand up throughout while snorkelling over sergeant majors, small parrotfish and the occasional ray. It is genuinely the best introduction to snorkelling for a nervous or young child anywhere on this coast, because there is no depth and no current inside the reef. Timing is everything - come within two hours of low tide, and skip it entirely when the surf is up. The lot is small and free, and fills fast.

Big Talbot has the strangest beach in Florida. The island is eroding, and as the bluff retreats it drops entire live oaks and cedars onto the sand below, where salt and sun bleach them white. The result is a shoreline of enormous pale driftwood skeletons, some still rooted, arranged along the tideline - it looks like nowhere else in the state and photographs extraordinarily well. Getting down means a short trail from the roadside parking and a scramble at the end. This is a walking and looking beach, not a swimming one: the water has current and there are no lifeguards.

Biscayne is almost entirely water, which means the visitor centre is a starting point rather than a destination - the park proper needs a boat. Concession-run snorkel trips go out to patch reef in the bay where the water is warm and generally calmer than the outer reef off Key Largo, and there are glass-bottom and island cruises for families not swimming. From shore you get a short boardwalk, a jetty and a good view across the bay, which is worth an hour but is not the park. Trips are weather-dependent and cancel often, so build slack into the plan.

The Blackwater is tannin-stained but clean, and it runs over pure white sand that piles into broad bars on the inside of every bend. That geography makes it close to ideal for paddling with children: the current is gentle, the water is usually shallow enough to stand in, and there is a natural place to pull out and swim every few hundred yards. Local outfitters run canoe, kayak and tube trips with shuttles, in lengths from an hour to a full day. The park itself has a campground and a short trail through Atlantic white cedar. Water levels matter - too low and you drag.

This is the largest Anastasia limestone outcrop on the Atlantic coast, and when a high tide coincides with an onshore swell the sea funnels through blowholes in the rock and erupts in plumes that can reach fifty feet. It is genuinely spectacular and genuinely conditional - on a calm day at low tide you get an interesting rocky beach and nothing more. Check the tide chart and the swell before you go. The Nature Conservancy runs the preserve and there is a small visitor centre. Climbing on the rocks is dangerous when the surf is running, which is exactly when it is worth watching.

Blue Spring is the largest winter manatee refuge on the St. Johns River, and on a cold January morning the run can hold several hundred animals packed into water that stays at 72 degrees. A boardwalk follows the run from the spring boil to the river, so the viewing needs no boat and works with a stroller. This is the rare wildlife sighting that is close to guaranteed rather than lucky. The trade-off is seasonal: while manatees are present the spring is closed to swimming and paddling, which typically means mid-November through March. In summer the animals leave and the spring becomes a swimming hole.

Sanibel runs east-west rather than north-south, which acts as a shelf catching shells that drift down the Gulf, and it is why people come here with bags and bend over in the surf line doing the Sanibel Stoop. Bowman’s is the quietest of the island’s public beaches, and the reason is the walk: from the car park it is a marked trail over a footbridge and through the dunes, about ten minutes, which sounds trivial and is not when you are carrying a cool box and a toddler. Parking is charged by the hour. Low tide after a winter storm is the jackpot. Live shells may not be collected. Facilities are basic - showers, a pavilion, grills, a playground and portable toilets while the permanent restrooms are rebuilt - and recovery from Hurricane Ian is still going on around the island.

Brewers Bay is where St. Thomas residents and university students go, and it is free with no cruise excursion traffic at all. The water is shallow, calm and clean, with sea grape trees giving real shade along the back - a rare and valuable thing on a Caribbean beach. There is seagrass offshore that sometimes brings turtles in. Food vans park on the road behind selling pates and local plates. The unusual feature is the airport: the runway ends just along the shore, so aircraft come in low directly over the water, which most children find far more interesting than the swimming.

Buck Island was one of the first marine areas in the world given national monument protection, and access is strictly through licensed concession boats out of Christiansted - you cannot simply turn up. The underwater trail runs through a barrier reef of elkhorn coral in a lagoon, with signs on the seabed, and the fish density inside the reef is far beyond anything reachable from a beach. Most trips also stop at Turtle Beach on the island’s west end, a stretch of empty white sand. The crossing takes about half an hour and can be bumpy. Full-day trips include lunch and more swimming time.

Caladesi can only be reached by boat, and that single fact keeps it emptier than any comparable beach on this coast. The ferry runs from Honeymoon Island every hour and gives you a four-hour window on the island, which is enough for a long swim and a walk up the beach away from the crowd near the dock. The Gulf water is warm and shallow with fine white sand. Behind the beach a marked kayak trail runs through mangroves in the bay. There is a snack bar and restrooms near the marina and nothing at all beyond that.