The Great Barrier Reef, which forms a belt along the coasts of Australian Queensland, is the starting point for this oceanic exploration of an Italian expedition.
In New Zealand, the "geisers" and the warlike customs of the natives; on the continent, the typical fauna; in New Guinea, a wedding ceremony at the Canachi; the virile initiation with fire and underwater fishing in the Torres Strait, the mythological agony of the old native and the funeral saga of the turtles. These are the most salient points of the cinematic report; an atmosphere of fable and death emanates from the images of this prehistoric world.