The Guna Yala archipelago counts roughly 365 islands, and fewer than fifty of them are inhabited. The rest are sandbars with a dozen coconut palms apiece, held in place by reef and habit. The comarca stretches some 370 kilometres along Panama's Caribbean coast, from the Colón border to the Colombian frontier, and it has been governed by the Guna themselves since the Dule Revolution of 1925 — one of the earliest indigenous autonomies recognised anywhere in the Americas. A san blas island hopping day tour crosses into that jurisdiction, not merely into a landscape. Autonomy here is administrative, not symbolic. The Guna General Congress sets the rules for outside visitors, and the 22 USD Guna Yala territory entrance fee per foreign adult is collected at the checkpoint on the road down from the continental divide. Land cannot be sold to outsiders. Coconuts, long the archipelago's currency in trade with Colombian schooners, remain communal property. Island access, boat licensing and the operation of San Blas Islands boat tours from Panama City are all administered by community congresses on individual islands. The geology explains the itineraries. The islands sit atop a shallow shelf, so the water between them rarely exceeds a few metres — which is why hopping is possible at all, and why a wooden lancha can move between Isla Perro, Isla Diablo and a mid-reef natural pool in a single morning. Isla Perro's shallows hold the wreck of a small vessel, now colonised by coral and easily reached with a mask and snorkel. The natural pool is a sandbar submerged under waist-deep water, ringed by starfish, with no land above the surface at all. Culturally, the archipelago is best known for the mola: layered reverse-appliqué panels sewn by Guna women, originally a translation of body painting onto imported cloth in the nineteenth century. Molas are still made and sold on the visited islands, and the geometric vocabulary — labyrinths, birds, fish — predates the fabric it now occupies. The address given for every san blas island hopping day tour tour is simply Guna Yala Comarca, Panama, because there is no street grid, no ticket hall and no gate. The comarca operates on daylight rather than an opening schedule, and access runs 00:00–23:59 across all seven days. What limits a visit is the sea, the 4x4 descent from the Llano-Cartí road, and the willingness of the ocean between one palm-covered sandbar and the next.