I remember watching this Jacque Cousteau's documentary on this in 1971. It really ignited my interest in the war in the Pacific.
Truk Lagoon - Wikipedia, the free encyclopedia
...In 1969, the famous French oceanographer, Jacques Cousteau and his team explored Truk Lagoon. Following Cousteau's 1971 television documentary about the lagoon and its ghostly remains, the place became a scuba diving paradise, drawing wreck diving enthusiasts from around the world to see its numerous and virtually intact sunken ships. Scattered mainly around the Dublon, Eten, Fefan and Uman islands within the Truk group, a number of the shipwrecks lie in crystal clear waters less than fifteen meters below the surface. In waters devoid of normal ocean currents, divers can easily swim across decks littered with gas masks and depth charges and below deck can be found numerous human remains. In the massive ship holds are row upon row of fighter aircraft, tanks, bulldozers, railroad cars, motorcycles, torpedoes, mines, bombs, boxes of munitions, radios, plus thousands of other weapons, spare parts, and other artifacts.
In the politically incorrect times of 1971, the show he prodiced even showed some Japanese skulls and bones still left in one of the IJN ships that was sunk!