The fish that had thus singularly fallen into their hands was, as Ben had stated, the sucking-fish, Echeneis remora,—one of the most curious creatures that inhabit the sea. Not so much from any peculiarity in appearance as from the singularity of its habits.
Its appearance, however, is sufficiently singular; and looking upon it, one might consider the creature as being well adapted for keeping company with the ferocious tyrant of the deep, on whom it constantly attends.
Its body is black and smooth, its head of a hideous form, and its fins short and broadly spread. The mouth is very large, with the lower jaw protruding far beyond the upper, and it is this that gives to it the cast of feature, if we may be permitted to speak of “features” in a fish.
Both lips and jaws are amply provided with teeth; and the throat, palate, and tongue are set profusely with short spines. The eyes are dark, and set high up. The “sucker” or buckler upon the top of its head consists of a number of bony plates, set side by side, so as to form an oval disc, and armed along the edges with little tentacles, or teeth, as the boy William had observed.
His companion’s account of the creature was perfectly correct, so far as it went; but there are many other points in its “history” quite as curious as those which the sailor had communicated.
The fish has neither swim-bladder nor sound; and as, moreover, its fins are of the feeblest kind, it is probably on this account that it has been gifted with the power of adhering to other floating bodies, by way of compensation for the above-named deficiencies. The slow and prowling movements of the white shark, render it particularly eligible for the purposes of the sucking-fish, either as a resting-place or a means of conveyance from place to place; and it is well-known that the shark is usually attended by several of these singular satellites. Other floating objects, however, are used by the sucking-fish,—such as pieces of timber, the keel of a ship; and it even rests itself against the sides of submerged rocks, as the sailor had stated. It also adheres to whales, turtles, and the larger kinds of albacore.
Its food consists of shrimps, marine insects, fragments of molluscous animals, and the like; but it obtains no nutriment through the sucking-apparatus, nor does it in any way injure the animal to which it adheres. It only makes use of the sucker at intervals; at other times, swimming around the object it attends, and looking out for prey of its own choice, and on its own account. While swimming it propels itself by rapid lateral movements of the tail, executed awkwardly and with a tortuous motion.
It is itself preyed upon by other fish,—diodons and albacores; but the shark is merciful to it, as to the pilot-fish, and never interferes with it.
Sucking-fish are occasionally seen of a pure white colour associating with the black ones, and also attending upon the shark. They are supposed to be merely varieties or albinos.
When sharks are hooked and drawn on board a ship, the sucking-fishes that have been swimming around them will remain for days, and even weeks, following the vessel throughout all her courses. They can then be taken by a hook and line, baited with a piece of flesh; and they will seize the bait when let down in the stillest water. In order to secure them, however, it is necessary, after they have been hooked, to jerk them quickly out of the water; else they will swim rapidly to the side of the ship, and fix their sucker so firmly against the wood, as to defy every attempt to dislodge them.