Caló des Moro — the Catalan spelling distinguishes it from a dozen other Moro-named inlets across the Balearics — earned its reputation not through marketing but through a single geological accident: a thirty-metre breach in the Santanyí limestone plateau that funnels seawater into a crescent basin flanked by vertical cliffs. The cove measures barely eighty metres across at its widest point, yet its sand shelf drops to twelve metres within twenty paces of the shore, creating the gradient that renders its water a shifting palette of cyan, cobalt, and near-violet depending on cloud cover and sun angle. Access by land requires a forty-minute hike from the nearest car park along a rutted trail through garrigue scrub, a route that discourages casual visitors but ensures the beach remains free of permanent structures. Boat access, by contrast, delivers passengers directly to the mooring buoys installed two hundred metres offshore, within easy swim of the beach and the submerged rock shelves that rim the cove's eastern flank. The surrounding Mondragó Natural Park, established in 1992, protects eleven kilometres of coastline that includes not only Caló des Moro but also Cala Màrmols to the south and the twin beaches of S'Amarador and Mondragó to the north. The park's marine extension prohibits anchoring in sensitive seagrass beds and limits motorised traffic to designated corridors, measures that have stabilised populations of grouper, octopus, and the endemic Mediterranean damselfish. The limestone substrata that define the coastline date to the Miocene epoch, their porosity creating the underwater caves and overhangs that make the area a preferred snorkelling site. Visibility routinely exceeds twenty metres in calm conditions, and the lack of riverine input means salinity remains stable year-round. Santanyí coastal cruises departing from Cala Figuera or Portopetro typically bundle Caló des Moro with Cala Màrmols, the latter even more remote and accessible only by sea or a two-hour overland trek. These excursions follow the contour of the coast rather than cutting straight lines, allowing passengers to observe the terraced agricultural plots that climb the inland hills and the stone watchtowers erected in the sixteenth century to guard against North African corsair raids. Most operators schedule swim stops at both coves, providing snorkelling equipment and allowing thirty to forty minutes in the water at each location. Departure times cluster in the morning to avoid the afternoon chop that builds when the prevailing easterlies accelerate through the gap between Mallorca and Cabrera, the uninhabited island visible fifteen kilometres offshore.