Truk Lagoon is recognized as the world's greatest wreck diving destination and for good reason. More than 60 World War II Japanese war ships and aircraft were sunk during Operation Hailstone in February of 1944 and now rest peacefully on the floor of Truk Lagoon. All of these sunken monuments are accessible – most at a depth suitable for the novice or sport diver. Reef diving is one of Chuuk's best kept secrets because the focus and thrill of diving Truk Lagoon is the wrecks. Chuuk has miles and miles of mostly unexplored reef with a wide variety of big and small fish, turtles, and vibrant corals.