There are 12000 books on Nautilus, and the construction cost of Nautilus is1790,000 francs, even the equipment cost is 1500 francs, and all the artworks and collectibles on board are 5 million francs.

Nautilus is a mollusk and shellfish, belonging to the order Nautilus of Cephalopoda and Tetrabranchia. There are not many existing species, but they are all warm-water animals. They are endemic to Indian Ocean and Pacific Ocean, and distributed in Taiwan Province Province, Hainan Island and South China Sea Islands.

Nautilus is basically a benthic animal, which usually crawls slowly with its wrists at the bottom of deep water of 100 meters. You can also use wrist secretions to attach to rocks or coral reefs. They can swim in the water through inflatable shells or "rush back" by spraying water from funnels. After the storm, on a calm night at sea, Nautilus floated comfortably on the sea, with its shell up, its mouth down and its head and wrist fully extended. These animals are nocturnal, and their main food is benthic crustaceans, especially small crabs.