Sam

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  Huffard, Chrissy. "Introduction to the Urochordata." __UCMP__. University of Berkely. . Contains a general physical description and bodily functions of Urochordates.
 * Bibliography**

Ramel, Gordon. "Subphylum Urochordata." . Contains a detailed list of the physical structures and adaptations of Urochordates. Briefly describes the filter-feeding strategy.

"Subphylum Urochordata." __Chordata__. . Information on the development of the sea squirt from its larvae into its adult form. Describes the metamorphosis and the loss of body structures.

"Sea Squirts (Tunicates)." __Project UFO__. Cape Breton University. . The most organized, user-friendly site. Contained an introduction, Habitat, Predator, and Invasive Species paragraphs.