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See also:
  • ADW: Class Echinoidea - Photographs and information on the heart urchins, sand dollars and sea urchins from the Animal Diversity Web.
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  • Calcareous Flowers: Tests and Cross-sections of Sea Urchin Spines. - Photographic study by Richard Howey with some fine photographs of the intricate beauty of these structures.
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  • Echinoid Directory - Biology, phylogeny, and classification of sea urchins.
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  • The Echinoids - Information about sea urchins, such as how they live, feed, and reproduce. There is also an alphabetic listing of their taxa. From The Natural History Museum, London.
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  • Edible Sea Urchin: Echinus esculentus - Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
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  • Loxechinus albus - Factsheet from the FAO on the Chilean Sea Urchin which is eaten in Chile and Peru, its distinguishing features, distribution, habitat and biology.
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  • Purple Sea Urchin: Strongylocentrotus purpuratus - Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
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  • Red Sea Urchin - Information from Wikipedia on this species, Strongylocentrotus franciscanus, including its description, feeding habits, behavior and reproduction.
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  • Sea Urchin Embryo - A page from the Laboratory of Embryonic Gene Expression, included here for three beautiful photographs.
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  • Sea Urchin Embryology - Laboratory modules using sea urchin eggs to explore fertilization and development.
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  • Sea Urchin: A Stinging but Amazing Animal - Article by Jean-Marie Cavanihac on these animals with many photographs of their development.
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  • Sea Urchins Revisited - Photographic study by Jean-Marie Cavanihac of the sea urchin with some microscopic features of interest to the amateur naturalist.
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  • Strongylocentrotus purpuratus - Photograph and information on the purple sea urchin.
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  • Urchin Sex - Short article from Diver Magazine on how research into these marine creatures is playing an important role in human reproductive biology.
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  • Who is in Charge Here? - Illustrated article by Richard L. Howey considering how creatures with no brains, such as the sea urchin, react appropriately to their surroundings.
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Last update: October 16, 2011 at 6:55:04 UTC - edit