Saint John is a paradise for snorkelers and scuba diving enthusiasts. One of the top spots to explore the marine life is Cades Reef, located just off the southwestern coast of the island. This coral reef is teeming with colorful fish, sea turtles, and other fascinating creatures. If you prefer a shallower experience, visit Great Bird Island, a small uninhabited island known for its vibrant coral gardens and crystal-clear waters. Several local dive operators offer guided tours and equipment rental, ensuring a safe and memorable underwater adventure.