Long presumed to have no heads at all, starfish may be nothing but

Read more at In this video: Micro-CT scan of sea star showing the skeleton (gray), digestive system (yellow), nervous system (blue), muscles (red) and water vascular system (purple). Video Credit: University of Southampton Subscribe: Join Science X channel to support our mission: Thank you for helping our YouTube channel reach new heights! Hitting subscribe aids us in our mission to bring you the latest and greatest research news in science, medicine and technology.