The ocean smells like salt and warm stone as the group pushes off from a narrow sand spit. Small ripples lap against boards while the Algarve cliffs tower above, cut into ribs and honeycombed hollows by centuries of Atlantic wind and tide. An instructor calls safety points, then you glide under the first low arch; light spills through holes punched into the rock, turning the water the color of tropical pools. This is the Benagil caves not as a postcard moment but as a moving, tactile landscape—arches that dare you through, tunnels that hush the Atlantic into whispers, and tiny beaches that feel like secret pockets of sand.