Shellfish

“ Oh I have no doubt that there are shellfish who are good talkers—not the least doubt. But the big shellfish—the biggest of them, are so hard to catch. They are only to be found in the deep parts of the sea; and as they don't swim very much, but just crawl along the floor of the ocean most of the time, they are very seldom taken in nets. ”

“ Marine shellfish live in all kinds of places below high water mark; and some of the semi-amphibious ones thrive even above ordinary high water mark, where for days at a time nothing but the tops of the waves could reach them. ”

“ The long, narrow tongue of the vegetarian mollusc works like a scythe, and mows down the delicate marine grasses on which the animal feeds. The powerful tongues of those that prefer an animal diet are able to bore through the strongest shells; and woe betide the unfortunate shellfish which, having shown signs of weakness, or disease, is surrounded by its active, carnivorous brethren. The tongue, sometimes longer even than the shell itself, is covered with rows of very hard spikes, or teeth, arranged similarly to the burrs on a file. ”

“ The young of most shellfish are active little things, and are usually so different from their parents as to be unrecognisable. Some swim, or frisk about, and travel even long distances in search of suitable quarters to settle in. ”

“ My own sea-bottom investigations, combined with the sea-bottom investigations of the United States Fish Commission, have led me to the conclusion that edible shellfish abound along our coast in such great quantities that they can become an important rival to our meat-growing and packing industries, provided the proper apparatus is used for their recovery. ”

“ That which is obtained in southern countries is naturally red in quality, and therefore this is found in the island of Rhodes and in other such countries that are nearest to the course of the sun.
3. After the shellfish have been gathered, they are broken up with iron tools, the blows of which drive out the purple fluid like a flood of tears, and then it is prepared by braying it in mortars. It is called "ostrum" because it is taken from the shells of marine shellfish. On account of its saltness, it soon dries up unless it has honey poured over it. ”

“ Vertebrate fish are supposed to grow, and increase in size, till the day of their death, but shellfish do not do this. The shell becomes stronger and thicker with age, the animal having the ability to add layer after layer of nacreous, or pearly deposit, on the inside of the shell; and as the animal shrivels and lessens in size the thickness of the shell increases. And some, when they become too large, have power to dissolve the partitions in the shell, and deposit the material on the outside of the shell.
The time it takes a shellfish to grow to its full size varies a great deal. ”

“ Whenever it is low water they must rise to pick shellfish from the rocks; and the women, winter and summer, either dive to collect sea-eggs, or sit patiently in their canoes, and with a baited hair-line jerk out small fish. ”

“ On the coast of Brittany and Normandy many of the women rake for shellfish. Their custom is to wade into the water and, standing with the water often above the knee and waves sometimes washing as high as the waist, to rake all day for the shellfish that they are seeking. ”

“ But an inhabitant of the commonwealth, without such permit, may take eels and the shellfish above-named for his own family use from the waters of his own or any other city or town, and may take from the waters of his own city or town any of such shellfish for bait, not exceeding three bushels, including shells, in any one day, subject to the general rules of the mayor and aldermen and selectmen, respectively, as to the times and methods of taking such fish. ”

“ The shrimps are thrown into boiling salt water, rapidly stirred for a few seconds, and spread out on the deck to cool. From three to four hauls are made per day, a good day’s fishing consisting of from 30 to 40 quarts of shrimps. Large numbers of shrimps are potted.
The other important group of shellfish is the mollusca. Molluscs, i.e. “soft creatures,” are essentially soft, mobile animals, protected by shells. They are classed as bi-valves, for example oyster and mussel, and uni-valves, for example limpet and whelk. ”

“ All bivalves that live in the sand have shells which gape more or less, apparently to enable them to push their syphons through the sand to the water. The deeper in the sand the shellfish lives, the longer and stronger the syphon must be. ”

“ Certain kinds of shellfish, for example oysters, mussels, cockles, live in the sand or attached to the stones or seaweed on the seashore, generally between high and low watermarks. They obtain their food from the water as it streams over their gills. They require adequate room for growth and development, and constant irrigation by water containing sufficient floating food. When mussel beds or oyster beds become overcrowded, the fish are ill-nourished, their health is impaired and their growth is arrested. ”

“ Demersal fish, as they complete the larval stage of their development and descend into deeper water, have to rely for their food either upon the various species of young shellfish and crustacea that drop from the surface water as they develop, or hunt for their food amongst the small fish, mollusca, crustacea, worms and seaweeds of the sea-bottom. Plaice feed chiefly upon cockles and other mollusca, which in their turn feed upon diatoms. The cod is almost omnivorous, greedily devouring small fish, crustacea, worms or mollusca; its favourite food, however, is shrimps and prawns. ”

“ Sometimes you may be needed to haul some of the lobster pots, because we shall have two men at least doing research work on lobsters. Again, you may have to get mussels for some work that is being done on shellfish for food. ”

“ The experiments of the Department of Fisheries and Game for the past three years have proved that cultivation of shellfish offers great inducements and profit to both individuals and towns. When the present waste areas are again made productive, the value of the annual catch should be increased tenfold. ”

“ They are said to have got their name from the habit of eating oysters when they found them with the shell open, a practice that would be extremely hazardous for them to undertake, as these shellfish close their two valves very quickly and would be apt to catch the bird. Owing to their large size they are frequently shot at and, consequently, are usually shy. ”

“ Generally speaking, the amount of refuse is small, since the portions commonly rejected in preparation for the table have been removed before canning. Shellfish resemble meat and food fishes in general composition. ”

“ Its food consists of shellfish, which it detaches with its incisors from the base to which they are fixed, crushing them with its powerful molars. It may be distinguished from other allied species by seven or eight dark cross-bands traversing the body, by a recumbent spine in front of the dorsal tin, by twelve spines and as many rays of the dorsal and ten rays of the anal fin, and by forty-six scales along the lateral line. ”

“ Captain Nemo pointed to this prodigious heap of shellfish, and I saw that these mines were genuinely inexhaustible, since nature’s creative powers are greater than man’s destructive instincts. ”

“ They are from 28 to 35 inches in length, of a beautiful rose-color, deepest on the wings, fading to almost white on the neck, back and breast. Their tail-coverts are deep carmine. They feed at night by gathering insects and shellfishes from the mud in shallow water. In the breeding season they congregate in large numbers. ”

“ When live shells, as they are called, that is having the living fish in them, are obtained, the best plan is to place them in spirits of wine, this at once deprives the inhabitant of life, without injuring the shell, which should then be placed in hot water for a time, the body of the mollusk is thus rendered firm, and may be removed by means of some pointed instrument; care should be taken to leave no portion of animal matter within, or after a while it will become putrid and give out a stain, which will show through and injure the delicate markings of the shell ”

“ Some or other of the members of this class are well known to everybody, if only in the shape of toothsome food—the Prawn, the Shrimp, the Lobster, the Crayfish, and the Crab. The great characteristic of this class of the Arthropod phylum is the so-called ‘shell,’ which differs greatly from true shell in being composed of chitine, hardened with salts of lime. Most of the species live in the water and breathe by means of gills or through the skin. In dealing with these creatures, some long words must be employed, if our present work on them is to be a stepping-stone to something more advanced. ”

“ One of the commonest examples is the oyster shell; if broken across it will be seen to consist of very thin plates, or laminæ, as they are termed, closely packed together. The thinner these laminæ may be the more lustrous and beautiful appears the lining of the shell; that shifting play of colours which we call iridescent, from iris—the rainbow, is then brightest and most noticeable. A very remarkable substance is this mother-of-pearl; smooth, and shining, and delicately-tinted. Who would expect to find such a beautiful lining to the rugged, rough, dingy-looking oyster, or mussel shell? ”

“ This you may easily prove by applying a little acid to a shell, and you will find that an effervescence takes place.
"The animals that inhabit shells are bloodless, without bones, but provided with a heart, lungs, and mouth, together with other organs needful to their conformation.
"Testaceous animals have the power of enlarging their habitations; they can also repair any injury that may occur to them.
"Many kinds of shell-fish are made use of by man, and form a valuable article of food, such as oysters, cockles, muscles, scallops. The whelk is also used, and a species of murex. ”

“ During the latter part of summer and autumn, these minute shell-fish constitute the food of almost all those busy flocks that run with such activity along the sands, among the flowing and retreating waves. They are universally swallowed whole; but the action of the bird’s stomach, assisted by the shells themselves, soon reduces them to a pulp. Digging for these in the hard sand would be a work of considerable labour, whereas, when the particles are loosened by the flowing of the sea, the birds collect them with great ease and dexterity. ”

“ Yes, my dear, a fish has lived in each of these little shells. I have sometimes picked them up on the beach with the fish in them; but they are generally washed on shore when the sea is rough, and the fish dies and falls out of the shell before it is picked up; as fish, you know, cannot live out of the water. Some day I will show you a very beautiful shell, which I have in my cabinet; it is the shell of the paper nautilus, which is a very curious little fish. ”

“ In the intervals between such little mishaps they seem to be picking minute shell-fish off the rock; but what shell-fish are they? for the small white ones, with which large areas of the rock are covered, are as hard as stone, and might defy anything short of a hammer and chisel to dislodge them. It is not on these assuredly that these soft little things are feeding, and now I see that where they are most active the rock is black. There are broad, black bands and streaks upon it, but what these consist of, or whether they are anything more than seaweed I cannot quite make out ”

“ CONTENTS OF SHELL-MOUND.
The third shell in order, in this bank of shells, is the mussel, and then the cockle,—all edible. “There is evidence enough in these mounds,” says Dr. Gordon, “to show that they have been the work of man, and not the effect of any tidal current, or any other natural cause. The shell-fish which the remains represent are, with scarcely an exception, edible, and continue to be eaten to this day. In all deposits by the sea, there is abundance of species that have ever been rejected as food. The shells are full-grown, or adult shells. ”

“ Let us now pass on to the murex and other kinds of shell-fish, which have a stronger shell, and in which Nature, in her sportive mood, has displayed a great variety—so many are the hues of their tints, so numerous are their shapes, flat, concave, long, crescent-shaped, rounded into a globe, cut through into a semi-globe, arched in the back, smooth, rough, indented, streaked, the upper part spirally wreathed, the edge projecting in a sharp point, the edge wreathed outwards, or else folding inwards. ”

“ The popular names of ‘shells,’ ‘shell-fish,’ and the like, as commonly applied to the Mollusca, the intrinsic beauty and grace of the shells themselves, resulting in the passion for their collection, their durability and ease of preservation, as compared with the non-testaceous portion,—all these considerations tend to unduly exalt the value of the shell as part of the organism as a whole, and to obscure the truth that the shell is by no means the most important of the organs. ”

“ We saw no appearance of their having any food but shell-fish; for though seals were frequently seen near the shore, they seemed to have no implements for taking them. The shell-fish is collected by the women, whose business it seems to be to attend at low water, with a basket in one hand, and a stick, pointed and barbed, in the other, and a satchel at their backs: they loosen the limpets, and other fish that adhere to the rocks with the stick, and put them into the basket, which, when full, they empty into the satchel. ”

“ The lamellibranchiate bivalve shells of the British Carboniferous system, so far as yet discovered, number about 300 - 104 - species, belonging to genera some of which are still familiar to us. There were the pectens or scallops, the pinnas with their beards of byssus, the cardiums or cockles, the mytili and modiolæ or mussels, all sea-shells. Then among the fresh-water bivalves we can detect several species of the unio or river mussel, that perhaps displayed valves as silvery in their lining as those of our own pearl-mussels. ”