Conseil and I were able to observe those Mediterranean fish whose powerful fins kept pace for a while in the Nautilus’s waters. We stayed on watch before the lounge windows, and our notes enable me to reconstruct, in a few words, the ichthyology of this sea.
Among the various fish inhabiting it, some I viewed, others I glimpsed, and the rest I missed completely because of the Nautilus’s speed. Kindly allow me to sort them out using this whimsical system of classification. It will at least convey the quickness of my observations.
In the midst of the watery mass, brightly lit by our electric beams, there snaked past those one-meter lampreys that are common to nearly every clime. A type of ray from the genus Oxyrhynchus, five feet wide, had a white belly with a spotted, ash-gray back and was carried along by the currents like a huge, wide-open shawl. Other rays passed by so quickly I couldn’t tell if they deserved that name “eagle ray” coined by the ancient Greeks, or those designations of “rat ray,” “bat ray,” and “toad ray” that modern fishermen have inflicted on them. Dogfish known as topes, twelve feet long and especially feared by divers, were racing with each other. Looking like big bluish shadows, thresher sharks went by, eight feet long and gifted with an extremely acute sense of smell. Dorados from the genus Sparus, some measuring up to thirteen decimeters, appeared in silver and azure costumes encircled with ribbons, which contrasted with the dark color of their fins; fish sacred to the goddess Venus, their eyes set in brows of gold; a valuable species that patronizes all waters fresh or salt, equally at home in rivers, lakes, and oceans, living in every clime, tolerating any temperature, their line dating back to prehistoric times on this earth yet preserving all its beauty from those far-off days. Magnificent sturgeons, nine to ten meters long and extremely fast, banged their powerful tails against the glass of our panels, showing bluish backs with small brown spots; they resemble sharks, without equaling their strength, and are encountered in every sea; in the spring they delight in swimming up the great rivers, fighting the currents of the Volga, Danube, Po, Rhine, Loire, and Oder, while feeding on herring, mackerel, salmon, and codfish; although they belong to the class of cartilaginous fish, they rate as a delicacy; they’re eaten fresh, dried, marinated, or salt-preserved, and in olden times they were borne in triumph to the table of the Roman epicure Lucullus.
But whenever the Nautilus drew near the surface, those denizens of the Mediterranean I could observe most productively belonged to the sixty-third genus of bony fish. These were tuna from the genus Scomber, blue-black on top, silver on the belly armor, their dorsal stripes giving off a golden gleam. They are said to follow ships in search of refreshing shade from the hot tropical sun, and they did just that with the Nautilus, as they had once done with the vessels of the Count de La Pérouse. For long hours they competed in speed with our submersible. I couldn’t stop marveling at these animals so perfectly cut out for racing, their heads small, their bodies sleek, spindle-shaped, and in some cases over three meters long, their pectoral fins gifted with remarkable strength, their caudal fins forked. Like certain flocks of birds, whose speed they equal, these tuna swim in triangle formation, which prompted the ancients to say they’d boned up on geometry and military strategy. And yet they can’t escape the Provençal fishermen, who prize them as highly as did the ancient inhabitants of Turkey and Italy; and these valuable animals, as oblivious as if they were deaf and blind, leap right into the Marseilles tuna nets and perish by the thousands.
Just for the record, I’ll mention those Mediterranean fish that Conseil and I barely glimpsed. There were whitish eels of the species Gymnotus fasciatus that passed like elusive wisps of steam, conger eels three to four meters long that were tricked out in green, blue, and yellow, three-foot hake with a liver that makes a dainty morsel, wormfish drifting like thin seaweed, sea robins that poets call lyrefish and seamen pipers and whose snouts have two jagged triangular plates shaped like old Homer’s lyre, swallowfish swimming as fast as the bird they’re named after, redheaded groupers whose dorsal fins are trimmed with filaments, some shad (spotted with black, gray, brown, blue, yellow, and green) that actually respond to tinkling handbells, splendid diamond-shaped turbot that were like aquatic pheasants with yellowish fins stippled in brown and the left topside mostly marbled in brown and yellow, finally schools of wonderful red mullet, real oceanic birds of paradise that ancient Romans bought for as much as 10,000 sesterces apiece, and which they killed at the table, so they could heartlessly watch it change color from cinnabar red when alive to pallid white when dead.
And as for other fish common to the Atlantic and Mediterranean, I was unable to observe miralets, triggerfish, puffers, seahorses, jewelfish, trumpetfish, blennies, gray mullet, wrasse, smelt, flying fish, anchovies, sea bream, porgies, garfish, or any of the chief representatives of the order Pleuronecta, such as sole, flounder, plaice, dab, and brill, simply because of the dizzying speed with which the Nautilus hustled through these opulent waters.
As for marine mammals, on passing by the mouth of the Adriatic Sea, I thought I recognized two or three sperm whales equipped with the single dorsal fin denoting the genus Physeter, some pilot whales from the genus Globicephalus exclusive to the Mediterranean, the forepart of the head striped with small distinct lines, and also a dozen seals with white bellies and black coats, known by the name monk seals and just as solemn as if they were three-meter Dominicans.
For his part, Conseil thought he spotted a turtle six feet wide and adorned with three protruding ridges that ran lengthwise. I was sorry to miss this reptile, because from Conseil’s description, I believe I recognized the leatherback turtle, a pretty rare species. For my part, I noted only some loggerhead turtles with long carapaces.
As for zoophytes, for a few moments I was able to marvel at a wonderful, orange-hued hydra from the genus Galeolaria that clung to the glass of our port panel; it consisted of a long, lean filament that spread out into countless branches and ended in the most delicate lace ever spun by the followers of Arachne. Unfortunately I couldn’t fish up this wonderful specimen, and surely no other Mediterranean zoophytes would have been offered to my gaze, if, on the evening of the 16th, the Nautilus hadn’t slowed down in an odd fashion. This was the situation.
By then we were passing between Sicily and the coast of Tunisia. In the cramped space between Cape Bon and the Strait of Messina, the sea bottom rises almost all at once. It forms an actual ridge with only seventeen meters of water remaining above it, while the depth on either side is 170 meters. Consequently, the Nautilus had to maneuver with caution so as not to bump into this underwater barrier.
I showed Conseil the position of this long reef on our chart of the Mediterranean.
“But with all due respect to master,” Conseil ventured to observe, “it’s like an actual isthmus connecting Europe to Africa.”
“Yes, my boy,” I replied, “it cuts across the whole Strait of Sicily, and Smith’s soundings prove that in the past, these two continents were genuinely connected between Cape Boeo and Cape Farina.”
“I can easily believe it,” Conseil said.
“I might add,” I went on, “that there’s a similar barrier between Gibraltar and Ceuta, and in prehistoric times it closed off the Mediterranean completely.”
“Gracious!” Conseil put in. “Suppose one day some volcanic upheaval raises these two barriers back above the waves!”
“That’s most unlikely, Conseil.”
“If master will allow me to finish, I mean that if this phenomenon occurs, it might prove distressing to Mr. de Lesseps, who has gone to such pains to cut through his isthmus!”
“Agreed, but I repeat, Conseil: such a phenomenon won’t occur. The intensity of these underground forces continues to diminish. Volcanoes were quite numerous in the world’s early days, but they’re going extinct one by one; the heat inside the earth is growing weaker, the temperature in the globe’s lower strata is cooling appreciably every century, and
