María la Gorda

The rhythm is set by the bay. Boats leave the pier in front of the hotel and are back alongside between dives, so a typical day runs two tanks in the morning, one in the afternoon and a night dive when enough people want one. The water is flat almost every day, so plans rarely change for weather, and the reef starts close enough to the beach that a dive can be walked into rather than boarded for — useful for training, and for anyone who would rather not do a third boat ride.

Underwater the same shape repeats along the bay: coral garden over white sand, then a terrace of heads and gullies, then the edge where the ground tips over and falls away. Sand chutes cut down through the reef and work as routes to that edge, and the limestone is undercut with short caverns, arches and chimneys open enough that daylight still reaches through them. The lip generally sits deep, so the drop-off tends to be the second half of a dive rather than the start of it, and sites differ less by depth than by how much structure they hold.

Black coral grows on the shaded faces below the lip, on overhangs and under ledges where light is scarce; the name belongs to the skeleton rather than the living colony, which reads brown or olive under a torch. Beyond that the appeal is consistency — clear water, little current, and enough moorings to dive a full week without repeating yourself. It is also genuinely isolated: one hotel, one dive operation, and no alternative plan if you tire of the bay.