What Is the Ambulacral Groove on a Starfish?

By Staff WriterLast Updated Apr 7, 2020 3:17:04 PM ET
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The ambulacral groove is a deep linear depression located in the ambulacrum in some echinoderms such as starfish. The ambulacrum is an area in echinoderms that is marked by calcitic plates and located over the radial canals of the internal water-vascular system.