Because Bimini is a world-class hub for marine life, snorkel gear and a waterproof GoPro or camera are must-haves for capturing encounters with hammerhead sharks or wild dolphins. Pack plenty of cash, as golf cart rentals—the primary way to traverse the seven-mile island—and local conch shacks often operate on a cash-only basis. Lightweight, quick-dry clothing is ideal for the humid boat rides, and a sturdy pair of flip-flops or sandals will get you everywhere from the beach to the bar. Don't forget reef-safe sunscreen and polarized sunglasses to cut through the glare of the shallow flats. If you plan to explore the mangroves or the "Healing Hole," bring a bottle of insect repellent for the evening mosquitoes.