You step into knee-deep water and drag the boat ashore. The island—more sandbar than landmass—rises barely a meter above the river's surface. Coconut palms tilt at improbable angles, their roots half-exposed by erosion. The sand is fine and pale, littered with driftwood polished smooth by salt and current. Walk the perimeter in ten minutes; you'll find fishing floats, crab shells, a single plastic jug faded to ghostly white.
“The San Juan delta's only true island beach, shrinking and growing with each wet season's sediment load.”
Credit: UnsplashCrystal lagoon with rocky outcrop
The delta surrounds you in shades of green and brown: dark mangrove islands to the east, the river's main channel to the west running fast and turbid. You're standing on geology in flux—this island may be smaller next year, or gone, or doubled in size depending on which way the sediment settles. The current hums past, audible even when the wind drops.
You'll share the beach with brown pelicans and not much else. They perch in the palms, dive offshore in loose squadrons, surface with fish flashing silver. At high tide, the island shrinks; at low, sandbars emerge like new continents. Your boatman dozes in the shade, hat over his face, waiting to ferry you back when you've had your fill of this temporary coast.
