12 Unique Underwater Wonders in Oceania for the American Diver

7. SS Yongala, Australia

Regarded as one of the planet’s greatest wreck dives, the SS Yongala sits off Townsville’s coast in Queensland, Australia. Sunk by a cyclone in 1911, this 355-foot passenger ship has become an artificial reef brimming with life. Descending onto the wreck, divers are greeted by swirling schools of giant trevally, massive groupers, sea snakes, and green turtles. The ship remains mostly intact, providing atmospheric passageways for advanced divers—although penetration is typically restricted to help preserve the site. Strong currents add to the thrill, so experience is important. The spectacle of large marine creatures circling the wreck gives every visit an edge of unpredictability, and many divers return for new surprises each time. Its remote location means dive trips feel focused and uncrowded, perfect for those seeking iconic adventure.