Are sharks vertebrates or invertebrates?

Answer

Sharks are vertebrates as they do have a back bone but their skeletons very from those of bony and terrestrial fish. Their entire skeleton is usually made up of cartilage.
Q&A Related to "Are sharks vertebrates or invertebrates?"
they both are living things, both are animals, both have movement and both can breathe.
http://wiki.answers.com/Q/How_are_vertebrates_and_...
I don't know of any comprehensive researcher databases. So I checked out the staff pages of the Smithsonian, AMNH, and Bristol University, and cataloged all the relevant researchers
http://www.quora.com/Paleontology/What-is-the-rati...
Invertebrates don't have an internal skeleton made of bone -
http://www.chacha.com/question/how-are-invertebrat...
Invertebrates are animals that lack a backbone. Almost all animals (99 percent) are invertebrates. Of the more than one million identified animals, only 42,500 have a vertebral column
http://www.answers.com/topic/what-is-the-differenc...
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