Truk Lagoon (Chuuk Lagoon) consist of eleven major islands and many smaller islets within a forty mile wide lagoon surrounded by a protective reef. During World War II, the lagoon was host to Japan’s Imperial Fleet, which was left destroyed in the wake of Operation Hailstone, often referred to as Japan’s Pearl Harbor.
On the morning of February 17, 1944, American forces launched an attack against Truk Lagoon. US Navy carrier aircraft from USS Intrepid CV-11 and USS Essex conducted a surprise attack against Japanese ships anchored in Truk Lagoon, dropping 400 tons of bombs and torpedo.
Attacks continued February 18, 1944. In total, forty ships were sunk and thousands of Japanese died. Ten weeks later, a second raid sank more ships. The consequences of the attack made “Truk lagoon the biggest graveyard of ships in the world”.
Today, hundreds of Japanese aircraft and other military machines remain at the bottom of the lagoon, making it one of the world’s best World War II wreck dive sites.
Source: Pacific Wrecks