Read Twenty Thousand Leagues Under the Sea in Englishwith every sentence explained

Twenty Thousand Leagues Under the Sea by Jules Verne was first published in 1870. In Passage you read the full text in English, marked intermediate and filed under science fiction.

1866: something enormous is attacking ships on the open sea, and no one can say what it is.

Sailors report a vast, glowing shape that moves faster than any whale and tears holes in iron hulls. Pierre Aronnax, a professor at the Paris Museum, is convinced it is a giant narwhal, and he sails aboard the American frigate Abraham Lincoln to hunt it down, together with his loyal servant Conseil and the hot-tempered Canadian harpooner Ned Land.

The chase ends with the three men thrown into the sea and pulled aboard the "monster" itself: the Nautilus, a submarine decades ahead of its time, commanded by the brilliant and secretive Captain Nemo. Nemo has broken with the world above for good, and his guests may go anywhere aboard except home.

What follows is a voyage through underwater forests, sunken wrecks and polar ice. Jules Verne's 1870 adventure helped invent science fiction, and Nemo remains one of its great enigmas.

Passage sets the book as a quiet, paginated reader in English. Read at your own pace, and when a sentence stops you, tap it. You get:

• a natural translation of that exact sentence,
• a short note on the grammar, in plain words,
• the key words, which you can save with the sentence they came from,
• all of it in English, Spanish, French, German, Italian, Turkish or Portuguese, whichever you read best.

It's marked intermediate: comfortable once everyday English feels familiar, with the harder sentences one tap away. The words you save come back later in short review games, so the book keeps teaching after you close it.