Welcome to The Shackleton Club, Quark Expeditions' past passenger loyalty program designed to reward modern-day polar explorers for their commitment to polar exploration. Our aim with The Shackleton Club is to recognize and thank members for their loyalty, and our ultimate goal is to enable them to explore the Polar Regions as often as possible. Past passengers automatically save 5% on subsequent voyages with Quark Expeditions while enjoying exciting promotions and travel opportunities. The Shackleton Club discount is combinable with other in-market offers.