The ship is completely driven by electricity, which is obtained by extracting sodium from seawater, mixing sodium with mercury to form an alloy to replace zinc in bunsen burner battery cell, and then converting it into electricity and storing it in the battery. The food is full of fish, seaweed, etc. So the energy and necessities of the crew come from the sea. It doesn't need land supply at all, and it can sail indefinitely at sea.
The Artistic Features of Two Wan Li under the Sea;
Two Wan Li under the Sea is one of Verne's representative works, which represents Verne's colorful imagination and meticulous writing characteristics. The plot in the novel is bizarre and vividly depicts the underwater world full of mystery; Language is lively and interesting, which is both an artistic language and a scientific language. It vividly explains all kinds of underwater things.
In particular, the submarine Nautilus fascinated readers. The submarine described in Two Wan Li under the Sea is called Nautilus. Nautilus is a kind of snail-shell animal, which bears the huge water pressure after diving into the 100-meter deep sea with its thin shell of several millimeters. This detail fully shows Verne's extensive scientific knowledge.