While the term is "shark cage diving," you don't typically "swim" in the traditional sense; instead, you remain stationary inside a protective metal structure. In a high-fidelity cage experience—such as those found in South Africa, Australia, or Mexico—the cage is either tethered to the side of the boat at the surface or lowered to the sea floor. You usually wear a wetsuit and a mask, and in many surface-level dives, you don't even use scuba gear; instead, you breathe through a "Hookah" system (a hose from the surface) or simply hold your breath when a shark approaches. The goal is to observe the "High-Fidelity" power and beauty of great whites or bull sharks from a safe vantage point. The bars are spaced specifically to allow for clear visibility and photography while ensuring the shark cannot enter. While you might "shuffling" within the cage to get a better view, the high-fidelity protocol is to keep your hands and feet inside the bars at all times to ensure you remain an observer rather than a target in the shark's natural environment.