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  • Rights: Suhailah J Nassar Published 14 August 2017 Size: 170 KB Referencing Hub media

    Sea stars are invertebrates so they don’t have a backbone, but they do have a skeleton beneath their skin. This endoskeleton is made up of a complex network of hard bony plates made of calcium carbonate and held together by strong flexible tissues.

    Acknowledgement: Suhailah J Nassar

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