Sannat Cave is a boat-access Musandam cavern dive with a large swim-through, smaller passages, and a sloping reef that rewards controlled trim and careful wall-following. It is best treated as an advanced scuba route rather than a casual swim, because the cavern geometry, boat traffic, and turn discipline matter more than raw depth. Expect warm water, moderate visibility, and a slow, deliberate pace that keeps the reef in view while you work the passage and return cleanly to the boat. Rays, turtles, squid, and reef fish are the bonus, not the main event.