Natural history of animals; . Fig. 462. — Holothurian, or Sea Cucumber. inch to several feet in length. They live in the seaand are exceedingly interesting, and very beautifulwhen the long and delicate fringes around the mouthare expanded. When taken from the water theyshrink and lose their beauty of form and color. Theymust be seen in the ocean, or in the aquarium, in orderto get a good idea of them. Figure 462 shows onevery common at Grand Manan, Eastport, and otherplaces on the North Atlantic. The Chinese use theirdried and smoked skins, called trepang, in making soup. SEA URCHINS, OR ECHIN
Natural history of animals; . Fig. 462. — Holothurian, or Sea Cucumber. inch to several feet in length. They live in the seaand are exceedingly interesting, and very beautifulwhen the long and delicate fringes around the mouthare expanded. When taken from the water theyshrink and lose their beauty of form and color. Theymust be seen in the ocean, or in the aquarium, in orderto get a good idea of them. Figure 462 shows onevery common at Grand Manan, Eastport, and otherplaces on the North Atlantic. The Chinese use theirdried and smoked skins, called trepang, in making soup. SEA URCHINS, OR ECHINOIDEA. True Sea Urchins are hemispherical, or flattened, andhave a hard shell composed of plates which are regular. Fig. 463. — Sea Urchin. in form and firmly bound together. Upon these platesare tubercles, and on these tubercles hard spines. In SEA URCHINS. 235 certain plates there are rows of holes through whichpass fleshy organs called suckers, or ambulacral feet,with the end slightly expanded. By means of thesesuckers, which can be extended much beyond thespines, these animals can cling firmly to other bodies,and thus move about over the rocks, even up anddown their smooth sides, as well as on level much can these suckers be extended that a SeaUrchin has been seen to put them forth from the top,and, bending them downwards, cling to the bottom ofthe basin in which the animal was lying. Figure 463shows a common kind of Sea Urchin as it appearswhen alive. When the animal dies, the skin, whichcovers the shell and holds the spines in their places,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
