Science

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.

Laboratory modules using sea urchin eggs to explore fertilization and development.

Information from Wikipedia on this species, Strongylocentrotus franciscanus, including its description, feeding habits, behavior and reproduction.

Article by Jean-Marie Cavanihac on these animals with many photographs of their development.

Illustrated article by Richard L. Howey considering how creatures with no brains, such as the sea urchin, react appropriately to their surroundings.

Photographic study by Jean-Marie Cavanihac of the sea urchin with some microscopic features of interest to the amateur naturalist.

Photographic study by Richard Howey with some fine photographs of the intricate beauty of these structures.

Biology, phylogeny, and classification of sea urchins.

Photograph and information on the purple sea urchin.

Factsheet from the FAO on the Chilean Sea Urchin which is eaten in Chile and Peru, its distinguishing features, distribution, habitat and biology.

Photographs and information on the heart urchins, sand dollars and sea urchins from the Animal Diversity Web.