Named for a narrow canyon that divides the reef, Split Rock is a great wall dive. Divers can begin by dropping through the split — which appears as if gouged through the solid rock — and heading east to reach a ledge profuse with black coral. On a morning dive, the rising sun shines through these dark forests of coral creating soporific silhouettes, while afternoon dives are ideal for photography when the western sun illuminates all the small details of these fascinating corals.

West of the pin, the site has several headlands that jut from the wall, each with prolific black coral formations on their western faces. It is not unusual to feel a little current rounding each headland, and watching coral polyps twitching as they catch plankton in the moving water is a fascinating sight. Deep sponges, including Brain and Tubulate Sponges, often host resident Brittle Stars — hairy-legged and freaky-looking critters that can reproduce by splitting themselves in half and regrowing their arms. Numerous swim-throughs and tunnels bisect the reef wall, revealing something new on every dive.