Jules' Undersea Lodge Chalupa Research Laboratory, an undersea marine lab operated off Puerto Rico in the 1970s. The lodge features a 2 bedroom 1 bath retreat that can be rented for a night. The hotel also offers a scuba diving school. Jules' Undersea Lodge Jules' Undersea Lodge is an American hotel located in Key Largo, Florida and is the only underwater hotel in the United States. It is 30 feet (9 m) deep on the ocean floor and guests have to scuba dive to get to their rooms. The hotel is located at the bottom of the Emerald Lagoon and was opened in
The Silent World: A Story of Undersea Discovery and Adventure The Silent World: A Story of Undersea Discovery and Adventure The Silent World (subtitle: "A story of undersea discovery and adventure, by the first men to swim at record depths with the freedom of fish") is a 1953 book co-authored by Captain Jacques-Yves Cousteau and Frédéric Dumas, and edited by James Dugan. Although a French national, Cousteau wrote the book in English. Cousteau and Émile Gagnan designed, built, and tested the first "aqua-lung" in the summer of 1943, off the southern coast of France. In the opening chapters, Cousteau recounts the earliest days of scuba diving with his diving companions