Sandspur Island is a secluded barrier island off Florida's Gulf Coast, celebrated for its pristine shoreline, clear shallow waters, and abundant wildlife.
Sandspur Island is part of Cayo Costa State Park, one of Florida's largest and most remote barrier islands, accessible only by private boat or passenger ferry from Pine Island or Bokeelia. The island's name reflects the spiny coastal grasses that dot its interior, though most visitors come for the long, undeveloped Gulf-facing beach that defines its western edge. Because no bridges connect it to the mainland, the shoreline has remained largely unchanged for generations, preserving a landscape that feels genuinely wild.
The beach itself is the main draw, a broad expanse of fine white sand and broken shells where loggerhead sea turtles nest in summer. Shorebirds, including black skimmers, willets, and American oystercatchers, forage at the water's edge throughout the year. The bayside of the island offers calmer, shallower water well suited to kayaking and paddleboarding, with views across Pine Island Sound toward the mangrove-fringed shores of the surrounding park.
There are no restaurants or concessions on Sandspur Island, so visitors typically bring a packed lunch and spend the day at their own pace. The ferry from Pine Island Sound lands at the main Cayo Costa dock, from which a short trail or tram ride leads across the island to the Gulf beach. Those arriving by private boat often anchor in the sound and wade or dinghy ashore.
Sandspur Island rewards visitors who value quiet over convenience. Its combination of undisturbed shoreline, rich wildlife, and clear Gulf water makes it one of Southwest Florida's most memorable natural destinations.
Arrive by mid-morning on weekdays to secure a stretch of beach before day-trippers from nearby marinas arrive in the afternoon.
Bring all your own food, water, and sunscreen, as there are no facilities or vendors on the island.
Try snorkeling along the shallow sandbars on the bayside, where sea grass beds attract rays and small reef fish.
Wear water shoes when wading, as the shell-covered bottom can be sharp underfoot near the tide line.
Visit in late spring or early fall to catch warm water temperatures and thinner crowds compared to peak winter season.
Boat to Haulover Sandbar with a captain, with 5, 6, or 8-hour options
Cruise Biscayne Bay and look for dolphins, manatees, turtles, and rays
Cruise Biscayne Bay, stop at Bird Island, and kayak through mangroves
Paddle to Raccoon Island on a 2.5-hour kayak or SUP tour
Boat and kayak Biscayne Bay with a stop at Raccoon Island
Charter an Axopar XC Brabus 38 ft with a USCG-licensed captain, up to 12 guests