In essence, its light was generated in a vacuum, insuring both its steadiness and intensity. Such a vacuum also reduced wear on the graphite points between which the luminous arc expanded. This was an important savings for Captain Nemo, who couldn't easily renew them. But under these conditions, wear and tear were almost nonexistent.
When the Nautilus was ready to resume its underwater travels, I went below again to the lounge. The hatches closed once more, and our course was set due west.
We then plowed the waves of the Indian Ocean, vast liquid plains with an area of 550,000,000 hectares, whose waters are so transparent it makes you dizzy to lean over their surface. There the Nautilus generally drifted at a depth between 100 and 200 meters. It behaved in this way for some days. To anyone without my grand passion for the sea, these hours would surely have seemed long and monotonous; but my daily strolls on the platform where I was revived by the life-giving ocean air, the sights in the rich waters beyond the lounge windows, the books to be read in the library, and the composition of my memoirs, took up all my time and left me without a moment of weariness or boredom.
All in all, we enjoyed a highly satisfactory state of health. The diet on board agreed with us perfectly, and for my part, I could easily have gone without those changes of pace that Ned Land, in a spirit of protest, kept taxing his ingenuity to supply us. What's more, in this constant temperature we didn't even have to worry about catching colds. Besides, the ship had a good stock of the madrepore Dendrophylia, known in Provence by the name sea fennel, and a poultice made from the dissolved flesh of its polyps will furnish an excellent cough medicine.
For some days we saw a large number of aquatic birds with webbed feet, known as gulls or sea mews. Some were skillfully slain, and when cooked in a certain fashion, they make a very acceptable platter of water game. Among the great wind riders--carried over long distances from every shore and resting on the waves from their exhausting flights-- I spotted some magnificent albatross, birds belonging to the Longipennes (long-winged) family, whose discordant calls sound like the braying of an ass. The Totipalmes (fully webbed) family was represented by swift frigate birds, nimbly catching fish at the surface, and by numerous tropic birds of the genus Phaeton, among others the red-tailed tropic bird, the size of a pigeon, its white plumage shaded with pink tints that contrasted with its dark-hued wings.
The Nautilus's nets hauled up several types of sea turtle from the hawksbill genus with arching backs whose scales are highly prized. Diving easily, these reptiles can remain a good while underwater by closing the fleshy valves located at the external openings of their nasal passages. When they were captured, some hawksbills were still asleep inside their carapaces, a refuge from other marine animals. The flesh of these turtles was nothing memorable, but their eggs made an excellent feast.
As for fish, they always filled us with wonderment when, staring through the open panels, we could unveil the secrets of their aquatic lives. I noted several species I hadn't previously been able to observe.
I'll mention chiefly some trunkfish unique to the Red Sea, the sea of the East Indies, and that part of the ocean washing the coasts of equinoctial America. Like turtles, armadillos, sea urchins, and crustaceans, these fish are protected by armor plate that's neither chalky nor stony but actual bone. Sometimes this armor takes the shape of a solid triangle, sometimes that of a solid quadrangle. Among the triangular type, I noticed some half a decimeter long, with brown tails, yellow fins, and wholesome, exquisitely tasty flesh; I even recommend that they be acclimatized to fresh water, a change, incidentally, that a number of saltwater fish can make with ease. I'll also mention some quadrangular trunkfish topped by four large protuberances along the back; trunkfish sprinkled with white spots on the underside of the body, which make good house pets like certain birds; boxfish armed with stings formed by extensions of their bony crusts, and whose odd grunting has earned them the nickname "sea pigs"; then some trunkfish known as dromedaries, with tough, leathery flesh and big conical humps.