Sea urchin Programme (echinoidea) lanes are hemispherical, about heart-shaped or thin shape. No wrist and tentacles. Students are able to shell the activities of spines. Shell sub-10 with: 5 with a hole, the name "step with"; tube foot from the hole out. 5 with the lack of holes, name "between steps with." Through the tube foot and spine movement. Ventral surface of the central shell to port on the back for the anus, the central board, around the reproductive plate, sieve, eye plate. Dioecious. Has been found to have six or seven of ten, including purple sea urchins, horse manure and Dalian purple sea urchin eggs and other edible sea urchin. Some sea urchins eat algae, can damage seedlings and wakame seaweed, algae farming for the predators.
Octopus pillow (clypeaster), also known as "Star Shield", "Shield sea urchin." Sea urchin steel shield sea urchin Division. Body such as the memo, more than ten centimeters in diameter. Short spine outside, dense, such as hair. On the back: Step with, can be extended pereiopod. Population in the ventral center. Produced in shallow water. China's Guangdong and Fujian also produced.
Sea urchin Programme (haidangang) (echinoidea) invertebrates, Echinodermata of an outline. As to the anti-5 aperture bending the wrist turn and to heal together, so no wrist and step with groove, the whole body shaped like a hemisphere, heart-shaped or pancake-like. Calcareous plate developed to form a solid hard shell, the shell gave birth to the activities of thorns. Shell in 10 districts, 5 districts narrow, known as the "step zone zone" has holes, tube foot from the hole out. The other five district wide, with no holes, known as the "step between the band." Step between step band and arranged in alternating bands. Animal by tube feet and long spine movement. For the mouth of the central ventral shell, the back of the central as the anus, around 5 boards and 5 eyes subgenital plate and sieve. With multiple holes on the sieve is the entrance of water. Sea urchin is dioecious, living the rock and coral reefs in the warm sea bottom. Herbivorous species eating seaweed, Laminaria, Undaria seedlings serious harm; carnivorous species to marine animals for food. About 600 species worldwide, China is found to have 60 to 70. Greater economic value of purple sea urchins (anthocidariscrassispina). Dalian purple sea urchin (strongylocentrotusnudus) and horse manure, sea urchin (hemicentrotuspulcherrimus), etc., and their eggs for human consumption. |
Endocyclica