"When you like----" I cast a last look upon the sea, slightly yellowed by the Japanese coast, and descended to the saloon.
"And now, sir, I leave you to your studies," added the Captain; "our course is E.N.E., our depth is twenty-six fathoms.

Here are maps on a large scale by which you may follow it.

The saloon is at your disposal, and, with your permission, I will retire." Captain Nemo bowed, and I remained alone, lost in thoughts all bearing on the commander of the Nautilus.
For a whole hour was I deep in these reflections, seeking to pierce this mystery so interesting to me.

Then my eyes fell upon the vast planisphere spread upon the table, and I placed my finger on the very spot where the given latitude and longitude crossed.
The sea has its large rivers like the continents.

They are special currents known by their temperature and their colour.