OK, this movie isn't at all faithful to Verne's novels (both 20000 leagues & Mysterious island), but who cares. It was too difficult for that time to stay close to the characters and to the relationship between Arronax and Nemo, which is based on the talking, showing different philosophical points of vue. So there we stick to a melodrama full of suspense and action. The pacing is quite fast, for a 1916 movie. A lot of characters and settings are involved, the cinematography is most of the time quite good and the actors are... so so. But it's the editing that attracts attention here, in a griffithian narration full of "parrallel editing" as we say in french. Some sequences are composed of four or five parallel actions, and sometimes flashbacks are used to add another dimension to the melodrama. The same fact is related three times by three different characters, each flashback being longer than its predecessor until the final revelation (that we can guess early in the film, but, as for most of gender movies, the pleasure for the viewer comes from the combination between waited events and surprising elements) narrated by Nemo himself. I don't know anything as for the origin of the version I own on DVD, so this editing question is to stay questioned. But as it is there (I saw the 1h45 version, a Jokanan copy), it's a really imaginative movie, a sort of serial with a complexer narration. It is sometimes a little boring anyway, especially when it deals with Arronax and co (Ned Land is useless, and the real hero of the movie arrives later on) and with submarine sequences (no so many, in fact, but a little childish sometimes). The documentary aspect is anyway interesting (the shark scene, an early Cousteau sequence) and from an historical point of view those sequences are very important.

A good movie, not as brilliant as the Fleischer version, but entertaining and representative of the evolution of American cinema at that time.

Just for the record: it's quite possible that the Nadia anime series by Anno Hideaki have been highly inspired by this movie (I won't say anything else, avoiding spoilers. Watch for yourself).

• This film became famous for its groundbreaking work in actual underwater photography by George M. Williamson and J. Ernest Williamson.
• The actual undersea footage was shot in the Bahamas due to the unusually clear water. When this film was remade by Walt Disney 38 years later, they came to this same spot for their undersea footage.