Gary's Wall is an advanced wall dive on Grand Cayman's North Wall, where a mooring pin marks the jump-in point atop the drop-off and the reef face falls away in a near-vertical plunge beyond sport diving range. The wall face is decorated with overhanging coral formations, finger-like sand channels separating bommie sections, and the kinds of encrusting sponges and black coral typical of the North Wall's shaded faces. Planning centres on depth discipline: the wall drops continuously, so divers set a working limit early and use the mooring pin descent line as a reference point for the ascent. Marine life at Gary's Wall follows classic North Wall patterns with Caribbean reef sharks cruising the blue water at depth, hairy clinging crabs tucked under ledges, and resident snapper and grouper holding along the structure.