I want to give my honest opinion on this show. I've seen many people hate on the show without even watching it, the only thing they watched was a trailer which doesn't give the show enough justice. Some people disliked how different it was from Jules Verne's novel 20'000 Leagues under the sea. "Nautilus" isn't an adaptation, it's a serie freely inspired by the famous novel and uses its main character Captain Nemo and the one and only Nautilus, but the rest of the series doesn't have much to do with the novel. It has its own story and characters. The CGI was, let's be honest, not the best but it wasn't that bad, the characters were all very interesting even though I wish we had more information on the crew's past. I liked this show very much and secretly hope for a second season but we know it's very unlikely.