The most remarkable of these is known by the name of the Gulf Stream.

Science has decided on the globe the direction of five principal currents: one in the North Atlantic, a second in the South, a third in the North Pacific, a fourth in the South, and a fifth in the Southern Indian Ocean.

It is even probable that a sixth current existed at one time or another in the Northern Indian Ocean, when the Caspian and Aral Seas formed but one vast sheet of water.
At this point indicated on the planisphere one of these currents was rolling, the Kuro-Scivo of the Japanese, the Black River, which, leaving the Gulf of Bengal, where it is warmed by the perpendicular rays of a tropical sun, crosses the Straits of Malacca along the coast of Asia, turns into the North Pacific to the Aleutian Islands, carrying with it trunks of camphor-trees and other indigenous productions, and edging the waves of the ocean with the pure indigo of its warm water.
It was this current that the Nautilus was to follow.

I followed it with my eye; saw it lose itself in the vastness of the Pacific, and felt myself drawn with it, when Ned Land and Conseil appeared at the door of the saloon.
My two brave companions remained petrified at the sight of the wonders spread before them.
"Where are we, where are we ?" exclaimed the Canadian.

"In the museum at Quebec ?" "My friends," I answered, making a sign for them to enter, "you are not in Canada, but on board the Nautilus, fifty yards below the level of the sea." "But, M.Aronnax," said Ned Land, "can you tell me how many men there are on board?
Ten, twenty, fifty, a hundred ?" "I cannot answer you, Mr.Land; it is better to abandon for a time all idea of seizing the Nautilus or escaping from it.