- Sea urchins or urchins (/ ˈɜːrtʃɪnz /) are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to 5,000 metres (16,000 ft; 2,700 fathoms).en.wikipedia.org/wiki/Sea_urchin
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Echinus (sea urchin) - Wikipedia
Echinus is a genus of sea urchins. Sea urchins are echinoderms that are typically spherical or flattened with a covering of spine-like structures. Sea urchins tend to be important members of their ecosystems by grazing on other organisms and stabilizing populations. In addition to this, sea urchins play a large role in different economies globally as the urchin themselves and their r…
Wikipedia · Text under CC-BY-SA licenseEchinus esculentus - Wikipedia
WEBEchinus esculentus, the European edible sea urchin or common sea urchin, is a species of marine invertebrate in the Echinidae family. It is found in coastal areas of western …
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Sea urchin - Simple English Wikipedia, the free encyclopedia
WEBSea urchins are spiky members of the class Echinoidea of the phylum Echinodermata. Like the rest of the echinoderms, they are entirely marine . They are globe-shaped, and …
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Sea urchin | Description, Anatomy, & Facts | Britannica
WEBSea urchin, any of about 950 living species of spiny marine invertebrate animals (class Echinoidea, phylum Echinodermata) with a globular …
Strongylocentrotus droebachiensis - Wikipedia
WEBStrongylocentrotus droebachiensis is commonly known as the green sea urchin because of its characteristic green color, not to be confused with Psammechinus miliaris as it is also …
Strongylocentrotus purpuratus - Wikipedia
WEBStrongylocentrotus purpuratus is a species of sea urchin in the family Strongylocentrotidae commonly known as the purple sea urchin. It lives along the eastern edge of the Pacific …
Diadema (sea urchin) - Wikipedia
WEB9 rows · It is one of the most abundant, widespread, and ecologically important shallow water genera of tropical sea urchins. It is found in all tropical oceans, although is …
Sea Urchins - National Geographic
WEBNov 12, 2009 · See photos of sea urchins (including fire urchins, pencil-spined urchins, and more) in this oceans life photo gallery from National Geographic.
sea urchins - Encyclopedia of Life
WEBEchinoidea (Sea Urchins) is a class of echinoderms. There are 3412 species of Sea Urchins, in 728 genera and 139 families. This class has been around since the middle …
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