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Echinoidea

Science > Biology > Flora and Fauna > Animalia > Echinodermata > Echinoidea

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Calcareous Flowers: Tests and Cross-sections of Sea Urchin Spines. - http://www.microscopy-uk.org.uk/mag/artaug05/rh-seaurchin.html
Photographic study by Richard Howey with some fine photographs of the intricate beauty of these structures.

Echinoid Directory - http://www.nhm.ac.uk/research-curation/projects/echinoid-directory/intro/introduction.html
Biology, phylogeny, and classification of sea urchins.

Heart Urchin: Abatus sp. - http://www.peterbrueggeman.com/nsf/fguide/echinodermata5.html
Photographs and information on several species of heart urchin found in McMurdo Sound in Antarctica.

Loxechinus albus - http://www.fao.org/fishery/species/3621
Factsheet from the FAO on the Chilean Sea Urchin which is eaten in Chile and Peru, its distinguishing features, distribution, habitat and biology.

MSN Learning & Research Plus: Sea Urchin - http://encarta.msn.com/encnet/refpages/RefArticle.aspx?refid=761560371
Online encyclopedia article.

Pencil Urchin: Ctenocidaris perrieri - http://www.peterbrueggeman.com/nsf/fguide/echinodermata20.html
Photographs and information on this urchin found in the icy waters of Antarctica.

Red Sea Urchin - http://en.wikipedia.org/wiki/Red_sea_urchin
Information from Wikipedia on this species, Strongylocentrotus franciscanus, including its description, feeding habits, behavior and reproduction.

Sea Urchin Embryo - http://www.its.caltech.edu/~mirsky/
A page from the Laboratory of Embryonic Gene Expression, included here for three beautiful photographs.

Sea Urchin Embryology - http://www.stanford.edu/group/Urchin/
Laboratory modules using sea urchin eggs to explore fertilization and development.

Sea Urchin: A Stinging but Amazing Animal - http://www.microscopy-uk.org.uk/mag/artjul00/urchin1.html
Article by Jean-Marie Cavanihac on these animals with many photographs of their development.

Sea Urchins Revisited - http://www.microscopy-uk.org.uk/mag/artmay02/urchin2.html
Photographic study by Jean-Marie Cavanihac of the sea urchin with some microscopic features of interest to the amateur naturalist.

Sterechinus neumayeri - http://www.peterbrueggeman.com/nsf/fguide/echinodermata1.html
Photographs and information on this urchin found in Antarctica which often camouflages itself with bits of shell and debris.

Strongylocentrotus drobachiensis - http://webs.lander.edu/rsfox/invertebrates/strongylocentrotus.html
Exercise from Invertebrate Anatomy OnLine covering the systematics, external and internal anatomy of the green sea urchin.

Strongylocentrotus purpuratus - http://digimorph.org/specimens/Strongylocentrotus_purpuratus/
Photograph and information on the purple sea urchin.

The Echinoids - http://www.nhm.ac.uk/palaeontology/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.

Urchin Sex - http://www.divernet.com/Marine-Life/159801/urchin_sex.html
Short article from Diver Magazine on how research into these marine creatures is playing an important role in human reproductive biology.

Who is in Charge Here? - http://www.microscopy-uk.org.uk/mag/artdec02/rhcharge.html
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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