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Index Category
Num Date Index Chg. Chg. %
1 2015-03-22 112.86 -1.43 -1.27%
2 2015-03-15 114.29 -1.71 -1.50%
3 2015-03-08 116.00 0.00 0.00%
4 2015-03-01 116.00 2.57 2.22%
5 2015-02-22 113.43 14.86 13.10%
6 2015-02-15 98.57 4.57 4.64%
7 2015-02-08 94.00 0.86 0.91%
8 2015-02-01 93.14 4.29 4.60%
9 2015-01-25 88.86 3.43 3.86%
10 2015-01-18 85.43 3.43 4.01%

特徴

産地:The Common Limpet is an herbivorous marine snail that lives along the rocky shores of Western Europe. As they live in the intertidal zone (the area along the shore between the high tide and low tide sea levels), these limpets are extremely well adapted to an amphibious life. The thick, conical shell and strong, muscular foot combine to offer the Common Limpet a formidable defense against predators both in and out of the water.
Though they are not very large (no more than a few inches long), Common Limpets are eaten by people throughout their range. Living in the intertidal, they are easy to locate during low tide. They are difficult to pry off of their rocks, even for people, but given the right tools, a collector can remove all of the limpets from an area. Their population trends are unknown, but they have likely been depleted in some areas where numerous people hunt.
特徴:Cellana toreuma is a species of limpet, a marine gastropod mollusk in the family Nacellidae. Large crabs and sea stars are potential predators underwater and birds are a primary threat above. However, the shell is shaped in such a way that it is difficult to grasp and it is thick enough to be difficult to break. It also perfectly covers the entire soft part of the body. Using its muscular foot, the Common Limpet is able to form such a tight bond to its home rocks that it is very difficult to pry off. In addition to protection from predation, the shape of the shell and strength with which it can adhere to the rocks serve two additional purposes for the Common Limpet. The shell is shaped to give this animal a low profile, protecting it from crashing waves and strong coastal currents. It would be unable to succeed if it could not remain in its preferred habitat. Furthermore, during low tides, the tight seal that the Common Limpet creates with its rock prevents it from drying out in the sun.