Underwater exploration
Free to read here, from Project Gutenberg.
Twenty Thousand Leagues under the Sea
Twenty Thousand Leagues Under the Seas: An Underwater Tour of the World
Vingt mille Lieues Sous Les Mers — Complete
Vingt mille lieues sous les mers
Tom Swift and His Undersea Search; Or, the Treasure on the Floor of the Atlantic
Vingt Mille Lieues Sous Les Mers — Part 2
20.000 Mijlen onder Zee: Oostelijk Halfrond
Vingt Mille Lieues Sous Les Mers — Part 1
The sea horror
Sæfarinn (Ferðin kring um hnöttin neðansjávar)
20.000 Mijlen onder Zee: Westelijk Halfrond
Sukelluslaivalla maapallon ympäri
