Cayman Brac is the low-key Cayman Islands choice for divers who want big walls without big-island bustle. The signature underwater draw is the MV Captain Keith Tibbetts, a former Soviet-built frigate sunk as an artificial reef, backed by steep wall dives, spur-and-groove reefs, swim-throughs, and easy resort logistics. Above water, the island swaps nightlife for limestone caves, the 43 m Bluff, parrot reserve walks, heritage stops, and dramatic sunrise viewpoints. It is not a liveaboard destination. Most trips are built around Cayman Airways connections through Grand Cayman, a Brac resort or villa, local dive boats, and a rental car or taxi. The reefs are protected by Cayman marine regulations, public moorings, and strict no-take, no-touch, and no-glove rules for divers and snorkelers.